M&P 40/9 Conversion

You know what old sparky my buddy just gave me another one of those tubes if u shorten it the barrels fit perfect no bouncing around and uses minimal space. I could prob send you one once you get your extra barrel.
 
Old_Sparky said:
Thanks, all. This makes the picture much clearer for me. After I pick up my gun, I will have to get a 9mm barrel and a pair of mags to go with it. A little paint, plus the shipping tubes, a case to hold it all, and I will be good to go.
Click to expand...

You know what old sparky my buddy just gave me another one of those tubes if u shorten it the barrels fit perfect no bouncing around and uses minimal space. I could prob send you one once you get your extra barrel. You would be surprised how hard it was to find the perfect tube
 
Where are people getting their stock 9mm barrels? I need one for my .40
 
I got a 4 1/4" 9mm barrel from Midwayusa last week. The latest production barrels were in stock and priced at $67. I received the the barrel via standard shipping to Washington State 5-days after placing the order online.
 
Can someone post a pick of the barrel in the tube? I ordered mine from Midway and it came in a plastic bag. I am trying to come up with a good storage solution but need to find a tube for it. Thanks!
 
Guys, I tried to order a 9MM Shield barrel from S&W today and was refused. Not even offered a waiting list. Was told that it does not fit, had to be S&W fitted, was not for sale to the public and finally just not available. I have purchased over $12,000.00 in Smith & Wesson over the years and bought a M&P 40, Shield 40 and Bodyguard within the past three months. I have been a loyal S&W (USA only) customer for 40 years. This really insults me being lied to by the factory. It is like they think customers are plain stupid and will believe anything. It is quite possible the end of my Smith purchases. If anyone else knows how to get past the wall at S&W for a barrel please let me know.

Does any of the S&W compact series barrels fit the shield?
 
Last edited:
hunt4antlers said:
Guys, I tried to order a 9MM Shield barrel from S&W today and was refused. Not even offered a waiting list. Was told that it does not fit, had to be S&W fitted, was not for sale to the public and finally just not available. I have purchased over $12,000.00 in Smith & Wesson over the years and bought a M&P 40, Shield 40 and Bodyguard within the past three months. I have been a loyal S&W (USA only) customer for 40 years. This really insults me being lied to by the factory. It is like they think customers are plain stupid and will believe anything. It is quite possible the end of my Smith purchases. If anyone else knows how to get past the wall at S&W for a barrel please let me know.
Click to expand...

This has been occuring for quite some now time with guys trying to order the 9mm and .30 barrels for the conversion of the Shield. Most people now days have someone tell them that they need to send the gun in so s&w can assure proper fitment of the replacement barrel. Its obvious they have caught on to what we are doing and are trying to control it a bit more.
 
I had a question, will 40 S&W magazines fit in a 9mm frame?

I was thinking of getting an M&P9 Full size sometime this summer.

Extra magazines would be nice, the 2013 trigger is reworked I hear, and there wouldn't be any looseness of the 9mm barrel. (M&P40 with 9mm factory functions fine, guess I am nit picking)
+Extra Magazines
+Reworked Factory Trigger
+No looseness with the 9mm Barrel.

I don't shoot 40 S&W much, but might be interested in 357 Sig as well and really don't want to stock 40S&W.


So i was either going to sell my 40, Or keep the slide assembly and barrel while selling the M&P40 frame/lower.

Really I just don't feel like having more than one full size M&P if I barely shoot one at all. If the 9 frame fits 40S&W Slides and magazines It would be golden. I'd take the newer frame because of the better trigger pull/reset. I don't feel comfortable installing apex myself currently.

I mean Sig has started selling slides separately to convert calibers, I wouldn't mind having a 40/357 slide for an even faster caliber swap. Smith should really get in on that part of the market...

I guess in the end, it would be cheaper than buying a slide assembly, apex duty/carry kit/2 9mm magazines from midway. If I scored the "range kit" that would be an extra magazine, mag loader/holder/holster which is IDPA legal.

If all this worked out what do you think a fair price would be for the M&P frame?

Would $225 + shipping to an FFL be reasonable? Im not sure what the demand would be though. I might be better off just selling the 40 S&W as is and grabbing a 9mm.

It sucks that I am only a CSO, and Im not sure if my Chief would sign off on a LEO discount for me ..
 
Last edited:
Yes Magazine s 9/40-357 works fine ad long it is. an M&P FS only works with FS buy Compact will works with C and FS. yes the slided seems to work fine my 357 SigC shoots fine with 9mm and 40 C OEM Barrels and 9mm FS Magazine work great. Rowlette
 
tired to search as you suggested

Smitty357 said:
Shaving a bit of the barrel is the ONLY change.

The extractor inside the .40 and the 9mm are the exact same part.

In the end, it costs just the same to convert .9mm to .40 as it does the .40 to 9mm. All you need is a barrel and magazine.

This has already been done. Pictures and details are in the other thread. Just use the search up top.
Click to expand...

Smitty, I tried searching the forums for the backwards convert (from 9mm to .40) but couldn't find it. Any help would be great, I guess it is possible that it was removed.
 
Check the link below to my original .40 to 9mm conversion. Look on page 3 and u should find where a member converted his 9mm to .40. He took pics and a video of everything. Since then, several other people have done the same thing and now have a 9mm converted to .40. Follow his instructions and u should be just fine with the conversion.

This was with a Shield also, so the FS or the C's could be different. Keep that in mind.

http://smith-wessonforum.com/smith-wesson-m-p-pistols/280665-converted-my-shield-40-9mm.html
 
Last edited:
hunt4antlers said:
Guys, I tried to order a 9MM Shield barrel from S&W today and was refused. Not even offered a waiting list. Was told that it does not fit, had to be S&W fitted, was not for sale to the public and finally just not available. I have purchased over $12,000.00 in Smith & Wesson over the years and bought a M&P 40, Shield 40 and Bodyguard within the past three months. I have been a loyal S&W (USA only) customer for 40 years. This really insults me being lied to by the factory. It is like they think customers are plain stupid and will believe anything. It is quite possible the end of my Smith purchases. If anyone else knows how to get past the wall at S&W for a barrel please let me know.

Does any of the S&W compact series barrels fit the shield?
Click to expand...


I just received my S&W 9mm and 357sig full size barrels from Midway last week that I ordered 2 weeks earlier. You might look to see if they have any in stock for the c model. For under $70 it's worth a try.
 
Has anyone shot 9mm through their .40 frame from a bench? Just curious as to the accuracy results.
 
Where did you find the 9mm barrel, even Midway customer rep tells me they have no such item nor never have had a 9mm shield barrel in their system. Do you have to call Harry direct?
 
My Menace said:
Wouldn't think so but thought I'd ask. I got my 9 barrel today just need to find mags
Click to expand...

You can load a 40/357 magazine with 9mm rounds. All but the last round will shoot fine, the last one will FTF. A full-sized will hold 17, IIRC, so 16 useable trigger pulls.

EDIT: Just grabbed a brick of 22lr from Midway and added a .357 Sig barrel, too. And I recently finished my stockpile of 9mm and .40 (1k rounds each) :/ Now I have to find some bulk 357!
 
Last edited:
I experienced jams and very erratic ejection when using .40 mags to try to feed 9mm. Also had trouble getting the rounds to stay in the magazine and not pop out. It was harder to insert the magazines. Using 9mm magazines made the 9mm conversion completely reliable. Others report that they have better luck.
 
hunt4antlers said:
Where did you find the 9mm barrel, even Midway customer rep tells me they have no such item nor never have had a 9mm shield barrel in their system. Do you have to call Harry direct?
Click to expand...

This was for my full size. Not my shield. Sorry
 
New member here and luckily this is the first thread I've read because I was about to buy a SD9mm just to have a 9mm, but now there is no need since al I have to do now is buy a barrel for my FS M&P40
 
Haven't posted for a while....after reading all these positives on the M&P 9mm conversion, I just went to Midway and ordered An S&W 9mm factory barrel for my M&P 40. 66 bucks plus shipping... Ok, how about some feedback...looks like the 40 mags work but maybe a hang up once in a while...I hear using the same recoil spring is no problem... Looks like this could work out well...
 
KAB3344 said:
New member here and luckily this is the first thread I've read because I was about to buy a SD9mm just to have a 9mm, but now there is no need since al I have to do now is buy a barrel for my FS M&P40
Click to expand...

40 mags are possible but not as reliable just buy the 9mm mags and you wont know the difference you would think you bought a m&p9





kbr1 said:
Haven't posted for a while....after reading all these positives on the M&P 9mm conversion, I just went to Midway and ordered An S&W 9mm factory barrel for my M&P 40. 66 bucks plus shipping... Ok, how about some feedback...looks like the 40 mags work but maybe a hang up once in a while...I hear using the same recoil spring is no problem... Looks like this could work out well...
Click to expand...
 
Just got in my 9mm fullsize M&P barrel for my M&P40 today...Compared all "OD' dimensions with the 9 and 40 barrels, then seated the 9 brl into the slide and reassembled the pistol...then loaded a 40/357 mag with a mixture of 9mm 125 Golden sabre, 124 Tap critical defense, and CCI aluminum blaser 115 tmj. Manually cycled the action all the way through with no problems at all. Took it to my farm range and proceeded to empty 15 rd.s I had in the magazine at 8" inch steels @ 15 yds. All hits, no problems. Took it back in, did breakdown and searched for anything wrong...No problems, no gliches...Looks like I have a 3 caliber (40/357sig/9mm) M&P now. Thanks MidwayUSA for the factory S&W M&P barrel at a great price...!!!
 
You must log in or register to reply here.

Similar threads

H
.40-9mm conversion
Replies
25
Views
2K
Formula55
F
Doc Mark
Your Thoughts on the S&W Shield .40 Cal?
Replies
11
Views
357
Doc Mark
Doc Mark
L
Does Anyone have experience shooting .40 out of 10mm
Replies
25
Views
4K
rosewood
rosewood
P
M&P 9 Shield TS 3.1" holster recommendations
Replies
3
Views
661
sotexas
S
P
M&P 9 Shield TS 3.1" holster recommendations
Replies
3
Views
750
Lock n' Load
L

Latest posts

Back
Top