almost brand new M&P 15 sport not wanting to fire

I would send back the AR 15 to S&W with a brief letter of problem followed by a DVD or memory card showing you at a range with your problems. Be specific at which time this problem arose. Call them first and explain you have already sent it to them once, and who specifically what person will know you AR is going to and they are aware of your video. Ask them to fix it right, or get you a new AR.
 
I would send back the AR 15 to S&W with a brief letter of problem followed by a DVD or memory card showing you at a range with your problems. Be specific at which time this problem arose. Call them first and explain you have already sent it to them once, and who specifically what person will know you AR is going to and they are aware of your video. Ask them to fix it right, or get you a new AR.

I'm not burning a DVD for them or giving them an SD card to realize that it isn't slamming into battery and bending the casings to the point of complete dissasembly to clear it. In fact I'm not burning up another few 5.56 rds of my own either. I'm calling them tomorrow, letting them know what is up, that I'm sending in EVERY mag I've ever used for it plus the rifle.

I'm not trying to come off as snarky, because everyone has done nothing but try to help, but it is getting ridiculous at this point. I've spent money with s&w (4506, shield, mod 36) enough to where they should honor their word without me having to go back out there and shoot a film and burn it for them. I know it could possibly help them but seriously there can't be too many things causing the issue and it is pretty simple. It isn't like I could be limp-wristing or anything.
 
I'm not burning a DVD for them or giving them an SD card to realize that it isn't slamming into battery and bending the casings to the point of complete dissasembly to clear it. In fact I'm not burning up another few 5.56 rds of my own either. I'm calling them tomorrow, letting them know what is up, that I'm sending in EVERY mag I've ever used for it plus the rifle.

I'm not trying to come off as snarky, because everyone has done nothing but try to help, but it is getting ridiculous at this point. I've spent money with s&w (4506, shield, mod 36) enough to where they should honor their word without me having to go back out there and shoot a film and burn it for them. I know it could possibly help them but seriously there can't be too many things causing the issue and it is pretty simple. It isn't like I could be limp-wristing or anything.

Has S&W given you trouble with warrantying your gun...?
 
Has S&W given you trouble with warrantying your gun...?

no, other than it is still having this problem, after sending it to them once and them saying it was ok, using my Pmag and theirs.

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unless they can explain why this is happening with every single kind of ammo I've ever ran through simply, then they need to replace the rifle or at least run it until it emulates the problem and fix said issue.
 
Wow... just read some of your previous posts.... sounds like your disdain for S&W can only be satisfied with owning an AK and a Glock... :)

Good luck sending it back..
 
Wow... just read some of your previous posts.... sounds like your disdain for S&W can only be satisfied with owning an AK and a Glock... :)

Good luck sending it back..

I don't have much disdain for s&w other than with this particular weapon. My shield 9 didn't like a bad batch of rounds, figured that out when I ran the same rounds through my Glock 19 and M9.

Other than that (which was directly ammo related) I haven't had any problems out of S&W. My mod 36 was fine, my 4506 is great, and my shield 9 is my backup edc gun.

It is just a tad disheartening when you spend $600+ on a gun, decide to get it over a Ruger because you like S&W better as a whole, and then S&W can't figure it out after you send it in once. A well-kept AR-15 should NOT jam, I'm not in Iraq, and it definitely shouldn't be jamming every 50 rounds at least to the point of having separate the upper and lower and pull a shoulder muscle.
 
lol so you think it is ok that s&w sells me an inferior product apparently? or that they shouldn't have caught the problem the first time around and sent it back to me with the same exact problem?

you're perpetuating just as much drama by obviously being a S&W fanboy. I DO have a problem with their warranty work obviously. Yeah I'm a tad pissed but you probably would be too.

Anyway I don't know why I got on here other than to complain, because I'm out of "suggestions" and people blaming multiple brand new PMAGs. From now on this issue is between me and the people who work for S&W.
 
I'm wondering if my some oddball mistake you don't have a barrel with M16 feed ramps in the barrel extension mounted in am M4 receiver. If so that may be the reason you are having problems. Good news is that this type of assembly mistake isn't very difficult to spot, all you have to do is look to see if the feed ramps machined into the upper match the feed ramps machined into the barrel extension.

So, some definitions just to insure that you look in the correct area. 1) the Upper Receiver is the aluminum upper half that the barrel and handguard are mounted to. 2) The Feed ramps are two angled grooves machined and angled into the chamber. The reason there are two feed raps is because the AR platform uses a non converging double column magazine so the bullet can feed from either side of the magazine. Note, it just occurred to me that a missing or improperly feed ram on one side could cause the intermittent failure you are experiencing, so look to see that both feed ramps match each other. 3) The Barrel Extension is a separate part that screws onto the barrel itself and the Extension is the part that features the Locking Lugs for the bolt and two separate Feed Ramps that should match the ramps machined into the receiver. If there is any mismatch then that would be a problem. Note, a very slight step or visible line is NOT a mismatch, for this discussion a mismatch is something in excess of 1/32 inch.
 
I'm a mechanic.... when it comes to anything mechanical... on a car or a gun for that matter... I can usually fix it or figure it out. It's not unusual to have a customer complain about a problem with their car, yet when we get it... it just won't do it... so the bottom line, unless it does it.. tough to fix it. Taking guesses gets expensive on a car... You act like SW sent you a gun back on purpose that malfunctioned... get a life..
 
I'm a mechanic.... when it comes to anything mechanical... on a car or a gun for that matter... I can usually fix it or figure it out. It's not unusual to have a customer complain about a problem with their car, yet when we get it... it just won't do it... so the bottom line, unless it does it.. tough to fix it. Taking guesses gets expensive on a car... You act like SW sent you a gun back on purpose that malfunctioned... get a life..

I'm an IT guy/computer engineer. If I don't catch what is causing a mechanical problem at MY job I get cussed out. I didn't imply that they sent me back a bad gun on purpose, just said I was disappointed in them. And god "get a life" I'm not the one lurking S&W forums. Come on don't get petty. S&W will make it right I'm sure, just wanting to know if anyone had any obvious answers again other than "looks like mag" or "looks like ammo".
 
my feed ramps look like the top right pic

not sure why that'd have anything to do with a pre-assembled rifle though
 
Just out of curiosity, you wouldn't happen to be shooting the rifle using the mag for a monopod, would you? That will almost guarantee jams.
 
Ok, so you are frustrated, we get it. But I can assure you that Ruger has put out some bad ARs, as well as Colt, DD, Noveske, BCM, etc.

You have admitted yourself that the problem is intermittent... fired 60 rounds without a problem... How many rounds do you want S&W to fire through your rifle to induce a jam? Let them know that it is intermittent and that you want them to shoot it until they see the failure.

It doesn't do you any good to come on here just to complain. If you are not willing to try to fix anything yourself, then you need to just send it in.
 
my feed ramps look like the top right pic

not sure why that'd have anything to do with a pre-assembled rifle though
Because sometimes machines get assembled wrong at the plant. It happens and was a worthwhile question to ask. This isn't an issue on yours so, on to the next potential issue.

Any possibility you could post a pic of the issue?
 
Ok, so you are frustrated, we get it. But I can assure you that Ruger has put out some bad ARs, as well as Colt, DD, Noveske, BCM, etc.

You have admitted yourself that the problem is intermittent... fired 60 rounds without a problem... How many rounds do you want S&W to fire through your rifle to induce a jam? Let them know that it is intermittent and that you want them to shoot it until they see the failure.

It doesn't do you any good to come on here just to complain. If you are not willing to try to fix anything yourself, then you need to just send it in.

Yeah you're absolutely right, I need to send that round in, show them what is going on. I just really can't figure it out, I'm using all the exact mags it came with (PMAG M2) and the day I got it back from them emptied 3 full pmags (90rds). All different but all good brass stuff that isn't known to be problematic and isn't in other ar's. Doesn't do good to say it is a crappy gun because the guy next to me at the range said his sport never had a problem. S&W can afford ammo I'm sure a lot more than I can so I'll just call them.
 
Yep, send it back in with a note detailing the stoppage as much as possible. Send them that pic of the round.... they may not like a live round being sent with the rifle.

And when they do fix it, please come back and let us know what they fixed. We have seen this a couple of times on the board, but have never found out what the fix was.
 
I'll apologize in advance, because I didn't want to read the entire thread. I see that you are using all Gen2 Pmags. Is this issue happening with ALL of the mags, or one in particular?

I ask as I've seen a bullet get bent as you pictured due to a Pmag having a weak spring (or at least that is what I attributed it too). Reason being is it was the only mag to cause the issue, and on some rifles it wouldn't hold the bolt open on the last shot (others it would). Problem couldn't be replicated with any other magazine, and even with this particular magazine it couldn't be replicated with regularity. It might bend the 5th shot, the 1st shot or it might function fine for the entire magazine.

If you haven't determined if it is the same magazine, then I'd suggest marking the magazine as soon as this situation arises and move on to another magazine.
 
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