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  #1  
Old 09-22-2014, 09:05 AM
DRPool DRPool is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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Default Slide won't lock back after last round of SD9VE

This issue started after the 1st couple hundred rounds shooting the gun after purchasing it in May.

I've shot multiple different ammo, reloads, 115, 124, Hornady, Winchester, etc. No matter the ammo it won't lock back. I've had friends shoot the gun...same result. I thought it may have been my limp wristing but that's not the case.

In fact, if I manually lock the slide back and put a magazine in, just the impact of that mag going in will cause the slide to release.

To further my point I've had the slide locked back, set the gun down on the bench and had just that light impact caused the slide to release. The gun has never been shot anywhere other than the indoor range close by. I clean it every 2-300 rounds, I've lubed it following cleaning per the manual included. I've also taken as much lube off the gun as possible and shot it fairly dry. Both approaches got the same result.

So....it's not me, it's not the ammo, it's not my friends.....it's definitely the gun. So should I send this back to S and W? Is there something I adjust to help this? Will my LGS be of any help?

Your advice is appreciated
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  #2  
Old 09-22-2014, 10:11 AM
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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How far does the slide stop go up into the notch in the slide? Is the angle of the rear of the notch 90°?

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Old 09-27-2014, 07:59 PM
Cmhorn.blessed Cmhorn.blessed is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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I had this start to happen unexpectedly after about 1200 rounds and began to be frustrated by it because it always had worked properly before. After having the RSO watch me shoot we realized that because I had changed my grip I had my left hand ever so slightly on the slide release which kept it from locking. After making a minor adjustment to my grip, problem solved!

I hope this helps, if for nothing more than to know that others have had this problem also, even if for a differnet reason.
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Old 09-27-2014, 11:42 PM
ADP3 ADP3 is offline
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Any chance that the spring on your slide release is broken?

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Old 09-28-2014, 04:05 PM
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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It seems like the slide stop spring is good since it does move out of the way to allow the slide to go forward.

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Old 04-13-2017, 01:33 AM
tw0792 tw0792 is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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Put a small dab of silicone caulk on the top of the magazine follower, where it catches the slide stop. It's not pushing it up and enough to catch the slide well. May have to reapply every so often.

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Old 04-22-2017, 11:08 AM
aqn77 aqn77 is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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I bought an SD9VE from a private listing, shoots fine, but i have the same non-locking back issue on the empty mag. It only locks back maybe 1 out of 10 times. Fires everything, but very annoying on how it doesnt stay open after the last round. They are factory mags, can some confirm an actual solution? I'm pretty sure it doesnt have a warranty anymore from S&W.
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Old 04-22-2017, 01:07 PM
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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I had this issue with a non-S&W, I was firing 115gr jacketed target rounds and it did the same, I switched to a 124gr hollow point and the last round locked the slide back. tried again with 115's and DID NOT LOCK. My pistol had around 150 rounds through it at the time between cleanings.
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Old 04-22-2017, 07:25 PM
micocyco micocyco is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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Quote:
Originally Posted by DRPool View Post
This issue started after the 1st couple hundred rounds shooting the gun after purchasing it in May.

I've shot multiple different ammo, reloads, 115, 124, Hornady, Winchester, etc. No matter the ammo it won't lock back. I've had friends shoot the gun...same result. I thought it may have been my limp wristing but that's not the case.

In fact, if I manually lock the slide back and put a magazine in, just the impact of that mag going in will cause the slide to release.

To further my point I've had the slide locked back, set the gun down on the bench and had just that light impact caused the slide to release. The gun has never been shot anywhere other than the indoor range close by. I clean it every 2-300 rounds, I've lubed it following cleaning per the manual included. I've also taken as much lube off the gun as possible and shot it fairly dry. Both approaches got the same result.

So....it's not me, it's not the ammo, it's not my friends.....it's definitely the gun. So should I send this back to S and W? Is there something I adjust to help this? Will my LGS be of any help?

Your advice is appreciated
I say contact S&W the gun needs to be fixed.
I have the same problem with a Bersa & but unfortunately they do not have great C S like S&W does.
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Old 04-23-2017, 09:35 AM
JDenny14 JDenny14 is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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Slide Stop Spring isn't the issue. That spring is used to hold the stop down. The way your slide stop works is by the magazine insert pushing against it. I'd see if the piece your mag pushes up on is bent somehow. Does it happen with both original mags. Also the slide closing when you insert a mag is a common issue. Seams lIke it's one of the corners they cut to make the gun so cheap.

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  #11  
Old 04-23-2017, 11:07 AM
micocyco micocyco is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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Quote:
Originally Posted by JDenny14 View Post
Slide Stop Spring isn't the issue. That spring is used to hold the stop down. The way your slide stop works is by the magazine insert pushing against it. I'd see if the piece your mag pushes up on is bent somehow. Does it happen with both original mags. Also the slide closing when you insert a mag is a common issue. Seams lIke it's one of the corners they cut to make the gun so cheap.
I have to completely disagree with you on this, my SD9ve is going on 7 years old thousands of rounds & it does not do that at all.
Yes if you slam the mag in hard enough it will release the slide, but that is true with most semi-autos.
First you should never set a gun down with a loaded mag & the slide open, but unless you dropped it the slide should not close, if this were common with the SD9 or 40ve S&W would have a big problem.
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Old 04-23-2017, 01:33 PM
sd9boi sd9boi is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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I've owned and enjoyed my SD9VE for about 2.5 years now and the ONLY issue I've had with the gun is slide lock failure. It IS intermittent, but very annoying. I've put in excess of 5K through the gun, different bullet weights, hp & ball, steel and aluminum cases, no issues there. I have seen my dominant thumb accidentally hit the slide lock lever a few times. I have big hands and the lever is longer than most. All this aside, I'm thinking about changing the mag followers and mag springs to see if this helps. It's interesting that when I retract the slide on an empty mag, it locks open BUT I can still push the lever UP about a mm or so. I'll post whether my "fix" works or not. Hope this helped.
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  #13  
Old 04-24-2017, 04:07 PM
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ou1954 ou1954 is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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Originally Posted by BIGDOC View Post
I had this issue with a non-S&W, I was firing 115gr jacketed target rounds and it did the same, I switched to a 124gr hollow point and the last round locked the slide back. tried again with 115's and DID NOT LOCK. My pistol had around 150 rounds through it at the time between cleanings.
This post seems to indicate that in some guns the slide isn't moving back far enough to allow the lock to engage.

I wonder whether the OP has tried a heavier bullet.
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Old 04-24-2017, 05:46 PM
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S&W Rover S&W Rover is offline
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The slide not locking back after the last round is, indeed, a common problem on many pistols -- not just SD's.

Here are the most likely causes:

1. The inside of the magazine is dirty, with gunk or dirt preventing the follower to move upward fast or firmly enough. Solution: Take floor plate off magazine, remove spring and follower, clean the inside of the tube and clean the spring (especially the sides which contact the magazine tube). Oil the inside of the tube very lightly, so as to avoid trapping more dust or dirt.

2. The magazine spring is no longer strong enough to get push the follower up fast enough to push the slide stop lever up fast enough to catch the notch in the side of the slide. Solution: Replace magazine spring.

3. The follower is damaged or worn -- the little ledge has been scraped or hammered to a lower level (its only plastic). Solution: Replace magazine follower.

Problems 1-3 can be eliminated as the cause if changing to a new magazine doesn't solve the problem.

4. The metal tab on the slide stop lever assembly, which interacts with the little ledge on the magazine follower, has been bent upward. If the tab is bent upwards too much, it cannot move the slide stop lever upwards enough to engage the slide in the rearward position. The tab may work intermittently, or work better with some mags than with others. Solution: a. bend the small tab back down to about 10 degrees below horizontal (you may have to take the slide stop lever out of the pistol to do this, then re-install it). Or, b. just install a new slide stop lever assembly.

5. Far less likely, but still possible: The inlet cut on the slide, for the slide stop lever, may have worn its edge smooth and no longer be able to catch the slide stop level assembly. Solution: it may be possible to use a small file to re-cut that ledge or notch in the slide at a right angle.
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Old 04-24-2017, 06:41 PM
micocyco micocyco is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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Quote:
Originally Posted by ou1954 View Post
This post seems to indicate that in some guns the slide isn't moving back far enough to allow the lock to engage.

I wonder whether the OP has tried a heavier bullet.
99.9% of the ammo my SD9ve has been feed has been 115 grain. Again I would send it back & let S&W find the problem.
A gun chambering a round own it own presents to much of a danger to me.
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Old 04-24-2017, 08:00 PM
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The slide stop lever (aka slide lock lever) is held in the up position -- holding the slide back -- by friction, as it sits in the small notch on the slide. The lever is under spring pressure to move downward.

If the slide jumps upwards -- for example, if the pistol is hit on the butt -- or if a magazine full of bullets is pushed upward in the magazine well and comes in contact with the bottom of the slide -- that could be expected to release the friction at the catch and allow the slide stop lever to move downward. Then the slide would move forward.

This is not a flaw in the pistol. The slide stop lever is supposed to move out of that notch when we pull the slide back a fraction of an inch, so we want the friction on the small mating surface to be minimal, and we need the downward force of the spring.

Likewise, for those who use their thumb to press the slide stop lever downward to release the slide, they want to lever to move out of that notch fairly easily too. It is not desirable for it to require a lot of force to move.

The slide should be locked back for very short periods of time, and for specific purposes, and generally only while the pistol is being held in the hand.
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Old 04-24-2017, 09:36 PM
micocyco micocyco is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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Quote:
Originally Posted by S&W Rover View Post
The slide lock lever is held in the up position -- holding the slide back -- by friction, as it sits in the small notch on the slide. The lever is under spring pressure to move downward.

If the slide jumps -- for example, if the pistol is hit on the butt -- that could release the friction and allow the slide lock lever to move downward, releasing the slide to move forward. This is expected and normal.

This is not a flaw in the pistol. We want the slide lock lever to move out of that notch when we pull the slide back a fraction of an inch, so we want the friction on the small mating surface to be minimal, and we need the downward force of the spring.

For those who use their thumb to press the slide lock lever downward to release the slide, they want to lever to move out of that notch fairly easily too. In fact, no one should want it to require a lot of force to move. (Maybe it shouldn't be called a slide lock lever, just a slide hold lever).

The slide should be locked back for very short periods of time, and for specific purposes, and generally only while being held in the hand.
BY George Rover, I think you got a hit, why would anyone put, drop or lay a pistol down with the slide locked back ?
Next has anyone noticed that the OP made his claims & asked his questions & has not been back.
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Old 04-29-2017, 07:33 PM
RandyX RandyX is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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I have 3 mags for my SD9VE , 1 works well, the other 2 would not hold open on the last round, I could hold up on the mags and they would work, I glued a piece of .030 guitar pick onto the tab of the follower and holds open every time now like a charm !
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Old 08-30-2017, 02:33 PM
Okie21 Okie21 is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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After a year and 1/2 with absolutely no issues, my slide won't lock open after the last round. I have 3 mags and they all do it now. I bent down slightly the tab on the inside of the slide stop lever. I'll see if this works.

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Old 08-30-2017, 03:14 PM
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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Quote:
Originally Posted by Okie21 View Post
After a year and 1/2 with absolutely no issues, my slide won't lock open after the last round. I have 3 mags and they all do it now. I bent down slightly the tab on the inside of the slide stop lever. I'll see if this works.

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Let us know how it works out. Mine engages everytime so far...but with minimal engagement. So I had thought about trying just what you're suggesting. I just hadn't tried it yet.
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Old 09-03-2017, 09:09 PM
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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Default Easy fix for slide

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I bought an SD9VE from a private listing, shoots fine, but i have the same non-locking back issue on the empty mag. It only locks back maybe 1 out of 10 times. Fires everything, but very annoying on how it doesnt stay open after the last round. They are factory mags, can some confirm an actual solution? I'm pretty sure it doesnt have a warranty anymore from S&W.
I had same issue with mine and figured it out. I upgraded mine with the apex tactical trigger and spring kit with a 20lbs slide spring and stainless steel guide rod. I posted a video on how to do it on youtube. The issue is the top of the spring on the release lever moved back slightly and the end poked out just underneath the block enough to restrict full movement of the release. As a result the slide merely ramped over the release. At first I thought the arm was contacting the block but when I put my magnifiers on there it was plain as day. I may have not had it placed fully correct when I put it back in after the mod (most difficult part of mod) so thought maybe the same thing happens at the factory. I doubt they are assembled by machines and that bugger is tricky wicket getting it in and aligned so you can put the pin in even with the tool they give with kit. Used a jewelers screwdriver to get behind spring at bend and pry it gently to the front so it sits just in front of block ledge and not under it. Stays every time now although I just did it today and haven't field tested to be 100% sure that was the cause but you can see lever sits in position as it should now. Good luck
Smith&Wesson sd9ve slide won't stay open simple fix. - YouTube

Last edited by Rockdog_D; 09-03-2017 at 09:12 PM. Reason: Forgot to add link to video I made on how to resolve issue.
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Old 09-04-2017, 05:17 PM
Rockdog_D Rockdog_D is offline
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Talking Sd9ve easy slide fix worked fine!

Well here'so the update on my slide fix. Went to range today and sent 300-350 rounds thru gun with both mags. Used Fiocchi, IMI, Remington and CCI ammo and not even 1 failure of the slide to remain open. S&W could benefit this firearm with a slight mod of having a bend in the end of the spring and a small notch in bottom of block to rest in. As I stated in my post IMHO I think this issue is from assembly and the difficulty of slipping the lever into place while trying get the pin in to keep it as the spring causes downward pressure and you have to push up on lever while simultaneously using the guide pin or punch to get it all lined up while standing on one foot and singing the abc's bacwards. At least that's what it felt like when I did the trigger and springs mod.
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Old 09-05-2017, 10:48 PM
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Do this . . . remove magazine and look at the position of the slide lock lever.

Then put an empty magazine in and see what happens to the lever.

What does it do?
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Old 09-17-2017, 09:32 PM
RandyX RandyX is offline
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I had the same issue with 1 of 3 mags, I superglued a tiny piece of guitar pick on the top of the mag follwer where it contacts the mag stop and have had no issues since.
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Old 09-29-2017, 04:11 PM
Okie21 Okie21 is offline
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
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Quote:
Originally Posted by Okie21 View Post
After a year and 1/2 with absolutely no issues, my slide won't lock open after the last round. I have 3 mags and they all do it now. I bent down slightly the tab on the inside of the slide stop lever. I'll see if this works.

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Turns out my problem was ammo related. I started using Freedom Munitions and that's when the problem started. Recently, I went to the range with 4 different types of ammo, Freedom fmj 124gr, Federal HST 147gr, Federal fmj 115gr, and Blazer Brass fmj 115gr. The Freedom Munitions ammo was the only one to fail to lock the slide back. So all is good with my SD9VE.

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Old 09-29-2017, 05:52 PM
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Turns out my problem was ammo related...... The Freedom Munitions ammo was the only one to fail to lock the slide back....

So, are you thinking the ammo was too weak to push the slide far enough back for the slide lock to engage? (that's the only thing that occures to me).
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Old 09-29-2017, 05:59 PM
Okie21 Okie21 is offline
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That's my guess. I did a little googling on it and read that others had the same issue

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Old 09-29-2017, 11:30 PM
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Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE Slide won't lock back after last round of SD9VE  
Join Date: Dec 2014
Location: Oklahoma
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Default Last round issue

Quote:
Originally Posted by Okie21 View Post
Turns out my problem was ammo related. I started using Freedom Munitions and that's when the problem started. Recently, I went to the range with 4 different types of ammo, Freedom fmj 124gr, Federal HST 147gr, Federal fmj 115gr, and Blazer Brass fmj 115gr. The Freedom Munitions ammo was the only one to fail to lock the slide back. So all is good with my SD9VE.

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Interesting that the "weaker" load cycled O.K. but just exactly not enough to allow the stop to engage.
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