Malfunctions

[TheVath]

Went shooting with a few friends this weekend and heres what went down:
3 rifles were S&W M&P-15 MOE, S&W M&P-15TS, Sig M400.
The guy with the TS would take one, sometimes two shots and experience a failure to feed malfunction. After clearing the round out, the bullet was very much bent (sorry, no pics). Tried a variety of different mags as well as ammo and the same thing continued to happen. Finally the TS and the Sig M400 swapped BCGs and voila, the TS functioned flawlessly. Whats even weirder is that the Sig M400 ran flawless also (with the TS BCG installed). Either way, thought I would share, we're going to contact Smith & Wesson about this because the TS is a very new rifle (less than 200rds).

Any theories or similar experiences?


Sent from my iPhone using Tapatalk

[Lurch]

After shooting the BGC in the Sig did they try it again in the M&P?

[TheVath]

Did not. Thats something we should've tried though. Also forgot to mention, the rifles are all factory rifles and not home builds


Sent from my iPhone using Tapatalk

[Lurch]

I would take a good look at the face of the BGC for debris could of been stripping the rounds funny and jamming them into the feed ramps. When you disassembled them it could have dislodged the debris and through for it worked in the SIG.

[Hoser]

Factory ammo?

BCG wet with oil or dry?

Did you try different mags?

[TheVath]

Ammo was all factory and was brass. The BCG was lubed (MPRO-7). Tried a variety of PMAGS (gen-2) with the same result.


Sent from my iPhone using Tapatalk

[ChunkyMonkey]

Went shooting with a few friends this weekend and heres what went down:
3 rifles were S&W M&P-15 MOE, S&W M&P-15TS, Sig M400.
The guy with the TS would take one, sometimes two shots and experience a failure to feed malfunction. After clearing the round out, the bullet was very much bent (sorry, no pics). Tried a variety of different mags as well as ammo and the same thing continued to happen. Finally the TS and the Sig M400 swapped BCGs and voila, the TS functioned flawlessly. Whats even weirder is that the Sig M400 ran flawless also (with the TS BCG installed). Either way, thought I would share, we're going to contact Smith & Wesson about this because the TS is a very new rifle (less than 200rds).

Any theories or similar experiences?


Sent from my iPhone using Tapatalk

I have an AR that used to do that.. but its a piston upper so I adjusted the gas and it works flawlessly. Over gas issue? Sorry I cannot be more helpful.

[BlasterBob]

"the bullet was very much bent". Was the cartridge case bent or was the bullet (projectile) actually the bent item?

[ChunkyMonkey]

"the bullet was very much bent". Was the cartridge case bent or was the bullet (projectile) actually the bent item?

Fail to chamber damage usually is in the neck area... I am assuming that's what he is experiencing. Dent or bent in the middle of the case is usually due to deflector which probably not the case. I am curious to the issue myself.

[TheVath]

The projectiles were bent


Sent from my iPhone using Tapatalk