just picked up mp10 and took it out this last weekend, most frustrating. it would not pick up most rounds and chamber them. bolt would just slide over round. i mostly had to mess with round in magazine and cycle by hand to get the round in the chamber. then when i would fire the round the magazine would fall out. anyone else having this problem. don't know if it is the magazine or the rifle. i have several ar15s and several bolt 308s so i don't think it is my lack of how to work this rifle, it is just not working the way it should. i would try other mags, but cannot seem to find any at local shops to pick up and try.
won't chamber round, mag falls out
- Thread starter alesix
- Start date
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Here come my silly questions:
1. Are you putting the mag in with the bolt locked open, or closed? Sometimes a full mag and a closed bolt don't work well together.
2. I am assuming you have a 10-round mag. Did you try it with 9 rounds in it?
3. Did you insert the empty mag and see if it locks in AND holds the bolt open when you cycle it? If the empty mag doesn't lock in place (bolt open or closed) then I would suspect the mag. If it didn't lock multiple mags in place, I would suspect that the mag release was installed without enough turns (making it not completely engage). That's quite a stretch, though.
1. Are you putting the mag in with the bolt locked open, or closed? Sometimes a full mag and a closed bolt don't work well together.
2. I am assuming you have a 10-round mag. Did you try it with 9 rounds in it?
3. Did you insert the empty mag and see if it locks in AND holds the bolt open when you cycle it? If the empty mag doesn't lock in place (bolt open or closed) then I would suspect the mag. If it didn't lock multiple mags in place, I would suspect that the mag release was installed without enough turns (making it not completely engage). That's quite a stretch, though.
chambering problem
i loaded with only 5 rounds as i was sighting in rifle and scope. did it with bolt open and closed no difference. don't have any other mags to try as i cannot find any locally. it seems to lock as i have tried to pull it back out, then fired it and mag would fall out.
i loaded with only 5 rounds as i was sighting in rifle and scope. did it with bolt open and closed no difference. don't have any other mags to try as i cannot find any locally. it seems to lock as i have tried to pull it back out, then fired it and mag would fall out.
Man, I would send it back to Smith & Wesson. That is just not right.
C5GUY
Member
I think you will find your problem to be your mag. Either the lock detent has been bent or it was not properly punched from the factory.
Yeah I would go to S&W about it. I'm not sure if you have the CA version but I think there was another thread with someone having the same issues and was told it was a problem with the bullet button.
I had a similar experience, but at least the mag would stay if I loaded it with the bolt open and not drop out when firing. I did have a problem with the bolt scraping over the top of the cartridges as you did. The follower on those metal ASC mags seem to always be tilted to one side. I even bought a spare and it behaves the same way.
I finally got a hold of some 308 pmags so I'm crossing my fingers that helps out when I go back to the range in a couple weeks.
Aldoradave
Member
I had the same problems with 2 new M&P 10s and both the factory 10 rnd and Mapul LR20, and some surplus ammo. Finally followed advice here and thoroughly cleaned them, put lots of oil on the moving parts and used new ammo. No more problem. Maybe the oil, maybe the break in, maybe the ammo?
I have 3 M1As that dry, out of the box worked just fine with all ammo and sort of expected the same from Smith and Wesson. Guess not... but those S&W folks ought to give us early adopters a heads up.
Dave Dillehay
I have 3 M1As that dry, out of the box worked just fine with all ammo and sort of expected the same from Smith and Wesson. Guess not... but those S&W folks ought to give us early adopters a heads up.
Dave Dillehay
chamber problem
i am going to try new mags as soon as i can find them. waiting for sw to come off the vacation time on the 9th and see if they respond to the email i sent them. i hope i did not regret going with this over m1a loaded which was offered by another store by phone about 10 minutes after i got back from buying and doing dros on the mp10 and yes it is a calif version.
i am going to try new mags as soon as i can find them. waiting for sw to come off the vacation time on the 9th and see if they respond to the email i sent them. i hope i did not regret going with this over m1a loaded which was offered by another store by phone about 10 minutes after i got back from buying and doing dros on the mp10 and yes it is a calif version.
Aldoradave
Member
First off, Sorry it's a California Version...made it to Texas in 1992 and will never look back.
Don't blow off the M&P 10 yet. The Corps made me change from my M14 in 67 to the M16 which I hated...but I got home alive. Since then I have avoided the AR platform like the plague but when I saw the overall workmanship of the M&P10 I bit. Ordered one and before it came in my LGS put one on their shelf while I was there. YES! I have more money than sense now-- so I bought that one right away.
I did have lots of problems right away like you, but used this forum to fix them. (not yet sure how). But getting into the internals of the weapon caused me to appreciate the engineering of the platform and I now have an open mind at least. Yes, the M14 platform has its heavy rugged beauty and reliability but certainly materials and engineering must have improved since 1956.
The brings up an interesting contrast for me. I hate the pistol M1911A1 which I used in the Marine Corps, and now use Glock 31 and 33 .357 sigs. Yet many of those around me continue to praise the 1911A1. How in the world can one prefer centuries old technology, other than traditionalists who have no faith in modern technology and engineering. Makes no sense to me!
Yes, I love my M-14 and 2 M1As which I still shoot but I am willing to give S&W the chance to prove their new technology. I used to hit BIG " bull' eyes" at 500 yards and iron sights with my M 14, but given new technology from S&W I am willing to bet they can do better. Indeed with the new platform accessories you can do a lot of things that you just cant do with the M-14?M1A.
For instance, my eyes are no longer 21 years old and a scope really helps. For the M1A you can get a good scope mount made of steel, that makes the rifle about 30 lbs. Too old for that now but the iron sights still work pretty good. But even those scopes won't fit the M1A Tactical or older M14s.
I also believe that this magazine shortage will be over soon so don't despair unless you live in the wrong place.
To conclude from an old Marine, keep up the faith that S&W will make it right.
Dave Dillehay
USMC 2081999
Don't blow off the M&P 10 yet. The Corps made me change from my M14 in 67 to the M16 which I hated...but I got home alive. Since then I have avoided the AR platform like the plague but when I saw the overall workmanship of the M&P10 I bit. Ordered one and before it came in my LGS put one on their shelf while I was there. YES! I have more money than sense now-- so I bought that one right away.
I did have lots of problems right away like you, but used this forum to fix them. (not yet sure how). But getting into the internals of the weapon caused me to appreciate the engineering of the platform and I now have an open mind at least. Yes, the M14 platform has its heavy rugged beauty and reliability but certainly materials and engineering must have improved since 1956.
The brings up an interesting contrast for me. I hate the pistol M1911A1 which I used in the Marine Corps, and now use Glock 31 and 33 .357 sigs. Yet many of those around me continue to praise the 1911A1. How in the world can one prefer centuries old technology, other than traditionalists who have no faith in modern technology and engineering. Makes no sense to me!
Yes, I love my M-14 and 2 M1As which I still shoot but I am willing to give S&W the chance to prove their new technology. I used to hit BIG " bull' eyes" at 500 yards and iron sights with my M 14, but given new technology from S&W I am willing to bet they can do better. Indeed with the new platform accessories you can do a lot of things that you just cant do with the M-14?M1A.
For instance, my eyes are no longer 21 years old and a scope really helps. For the M1A you can get a good scope mount made of steel, that makes the rifle about 30 lbs. Too old for that now but the iron sights still work pretty good. But even those scopes won't fit the M1A Tactical or older M14s.
I also believe that this magazine shortage will be over soon so don't despair unless you live in the wrong place.
To conclude from an old Marine, keep up the faith that S&W will make it right.
Dave Dillehay
USMC 2081999
I just took my CA M&P10 to the range for the first time and had the same issues. Fail to feed,and even manually cycling did not always chamber a new round. Very frustrating as this is the most expensive gun I've ever purchased. I'm going to try to obtain a Pmag and take the rifle apart and go through it. I bought the gun brand new and the only thing I did was install an extended charging handle latch to work with my optics. I tried putting in the mag with closed and open bolt, fully loaded and partially loaded mag. .308 and 7.62. My gut tells me it's the magazine(factory), and I hope I'm right. Otherwise it gets shipped back to the factory and I have to wait that much longer to go pig hunting.
Let me know if you have any success with the new mags and I'll do the same. Good Luck
Let me know if you have any success with the new mags and I'll do the same. Good Luck
I have the exact same problems including times where rounds were getting jammed while feeding, resulting in bullets being bent out of the casing. It's been like that since day 1. I thought it was the mags too but I recently got a hold of some pmags and it's still the same story. Very frustrating.
Some say that the gun just needs to be broken in, that maybe the internals need to smooth themselves out after being worked a while and to run the bolt carrier with a fair amount of oil. I also saw on another site that S&W suggested to also try using American made ammo. I've mostly used 147gr PMC Bronze but for some reason others haven't had a problem with it. I guess I will have to try some Federal or Hornady next time which I'm really hoping won't get bent up.
Some say that the gun just needs to be broken in, that maybe the internals need to smooth themselves out after being worked a while and to run the bolt carrier with a fair amount of oil. I also saw on another site that S&W suggested to also try using American made ammo. I've mostly used 147gr PMC Bronze but for some reason others haven't had a problem with it. I guess I will have to try some Federal or Hornady next time which I'm really hoping won't get bent up.
Not sure if you have sent your gun back yet, but I had the same problem with mine. I bought a new bullet button, and the new one had a much stiffer spring. It seem the spring on some of these is weak, and the recoil will eject your mag and another round will not chamber. Try this before you spend the time sending it back. It worked for me. Good Luck!
I'm not having problems with the mag dropping out but my rifle appears to be short cycling. Yesterday was my first day at the range. I put about 30 rounds through it.... one at a time 
. I had it dripping with oil, I even put a thin film of Tetra grease on it (yes, I have since been told not to do that). Nothing helped. It would not strip the next round, no matter what I did. Half the time it would not eject the fired round. It really seemed to be short cycling. When it did eject the fired round, it would ride up on the next cartridge, dinging the heck out of it. I'll tear it apart tonight and clean everything and oil it up well. I think I will try to manually work the action about a hundred times to see if that helps. I have some Kroil penetrating oil. Any comments on using that to lube the action? This is my first AR platform so I dont have years of experience with this particular style of rifle.
I have several Smith & Wesson products so I didn't hesitate to buy this rifle. I am shocked to find that this rifle, that is offered in a LE version, is so unreliable out of the box. Why would any LE agency want to buy a rifle that you have to fire a couple hundred rounds to "break it in" so that it would be reliable? This makes no sence to me.
. I had it dripping with oil, I even put a thin film of Tetra grease on it (yes, I have since been told not to do that). Nothing helped. It would not strip the next round, no matter what I did. Half the time it would not eject the fired round. It really seemed to be short cycling. When it did eject the fired round, it would ride up on the next cartridge, dinging the heck out of it. I'll tear it apart tonight and clean everything and oil it up well. I think I will try to manually work the action about a hundred times to see if that helps. I have some Kroil penetrating oil. Any comments on using that to lube the action? This is my first AR platform so I dont have years of experience with this particular style of rifle. I have several Smith & Wesson products so I didn't hesitate to buy this rifle. I am shocked to find that this rifle, that is offered in a LE version, is so unreliable out of the box. Why would any LE agency want to buy a rifle that you have to fire a couple hundred rounds to "break it in" so that it would be reliable? This makes no sence to me.
akrawc2
Member
Read my short stroking thread. I was just as frustrated until I shot over 200 rounds. Then things got better
Also, I have to add, a buddy of mine fired the 10 for the first time and had a weak shoulder and absorbed too much an Shute enough, did not pick up the next round. Just make sure you are rigid and let the buffer take it.
Also, I have to add, a buddy of mine fired the 10 for the first time and had a weak shoulder and absorbed too much an Shute enough, did not pick up the next round. Just make sure you are rigid and let the buffer take it.
Yes, I read the other thread. It just disturbs me to have to burn a couple hundred dollars of ammo so that the riffle will be "better". It should be great right out of the box. I have since read that some of the Armalite rifles also need to be broken in. I am aware of holding a semi auto firmly. I had to teach my nephews how to properly hold a good grip on a pistol so they wouldn't get FTL's.
akrawc2
Member
No dis-respect... Just throwing out some ideas that I had success with ...
jake321
Member
This is one gang of unhappy people I did not look to join!
So far I have tried PMag., DPMS, M&P, run the weapon wet and dry.
Used hi dollar Winchester, Black hills and not so hi dollar PPU Match ammo
All with the same result, the first round strips off the mag. chambers, fires or is ejected using the charging handle
Then the rifle fails' to pick up the next round from the mag. This takes place if I fire the weapon or attempt to bring up the next round using the charging handle.
I have already sent the rifle back once for fit and finish. This was done before firing the rifle (I would continue referring to the rifle as a weapon, but at this point used as a club would be the only manner it will qualify as a weapon) I own weapons (rifles) from the price range of the Bushmaster to POF and was issued other weapons from our lowest bidder government. All I can think of is; Smith & Wesson and the contractor they had build the rifle have the quality control of two monkeys picking their nose, one looking at the other to see which can get at the largest piece of snot!
If anyone finds a fix for this FTF that will not entail sending the rifle back to the same set of incompetent weapons experts that put it together in the first place?
Please post.
Thank You;
Jake
Fixed it
OK, it seems to be working now. I did three things, all of which have been suggested by others. I don't know which one did the trick or if it was a combination of all. First, I hand cycled the action about 160 times. It definitely felt a little smoother afterwards. (The action, not my arm! It was sore!) Second, I added a lead disk about 50 grains in weight to the buffer. Basically, I cut about a sixteenth of an inch off a 45 caliber lead bullet and put it in the buffer. Third, I changed ammo. I used IMR 4064 and some 150 grain FMJ bullets. I fired 5 rounds each from the factory mag and a Magpul mag with no issues. The bolt may be moving too fast in that the shells fall about 8 feet at five o'clock. But, for now, its working.
OK, it seems to be working now. I did three things, all of which have been suggested by others. I don't know which one did the trick or if it was a combination of all. First, I hand cycled the action about 160 times. It definitely felt a little smoother afterwards. (The action, not my arm! It was sore!) Second, I added a lead disk about 50 grains in weight to the buffer. Basically, I cut about a sixteenth of an inch off a 45 caliber lead bullet and put it in the buffer. Third, I changed ammo. I used IMR 4064 and some 150 grain FMJ bullets. I fired 5 rounds each from the factory mag and a Magpul mag with no issues. The bolt may be moving too fast in that the shells fall about 8 feet at five o'clock. But, for now, its working.
