Originally Posted by
Bradd_D
While firing, the round attempted to chamber, but the nose of the bullet hit the barrel extension just to the left of the chamber hole causing the BCG to stop moving forward. Locked the bolt to the rear, dropped the mag, bullet fell out.
The upper is an LMT 10.5" with Colt M16 BCG. Mags are Labelle w/Magpul followers and SAW red springs. The mags are probably 3 years old with 4000 - 6000 rounds on a group of 10 mags.
I'm guessing mag issue such as spread feed lips. Any other guesses?
I'd also measure the buffer spring. Could be a bad mag or mag spring, but it works as a 'system' with the buffer spring.
Chief Armorer for Elite Shooting Sports in Manassas VA
Chief Armorer for Corp Arms (FFL 07-08/SOT 02)
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