Just finished an AR 9 build and ran into a problem.
Engage colt pattern lower
Engage upper
ALG lower parts kit with ACT combat trigger
CMMG bolt
Pistol buffer tube
Tubbs flat wire spring
Slash's Heavy buffer 9mm buffer 9oz
Brownell's 32 round mags
11" Ballistic Advantage barrel...
Replaced the buffer spring with the Tubbs flat wire and still the same issue. Ran short on time at the range and did not try changing to a standard carbine buffer with quarters. I'll give that a go on the next range trip. I did switch out uppers to a 10.5 556 and it ran fine suppressed and...
Thank you gentlemen, lots of good info here.
I already have a Tubbs flat wire sitting here for another build, so I will try that first.
Can is a YHM ti phantom. I have the YHM qd flash hider installed. Would I see improvement with changing to the YHM qd brake?
Can I use a carbine buffer in the A5 tube? Or should I pick up the A5 H1 buffer(4.56 oz)?, the h2 is 5.3 oz.
Thanks for your advice, it is appreciated.
300blk
9" barrel
Vltor A5 with h2 buffer
Regular gas block
Pistol length gas
Unsupressed it does not eject the fired round, bolt goes back far enough to pick up the next round and jams. Same results with 150gr fiocchi and 220gr Remington.
Suppressed it runs perfectly with either ammo...