Well... I couldn't head out on my Sister's Birthday/Mom's Birthday/Mother's Day so I was out this weekend, first chance I had. I little hiccup, my 7.5" upper was buggered for unrelated reasons I won't get into here, so I will have to head back to test that another weekend. In the mean time, I swapped out a 12.5" upper and quickly put 100 rounds through it before I had to pack up and head home.
Through those 100 rounds, most in rapid secession, it ran without failure aside from the bolt catch. Brass ejected consistently at the 2:00 position. The bolt catch is currently 70/30, 70% of the time it works, 30% of the time it returns to battery. I did cut 2 coils off the spring and did not shave the buffer/bumper.
Through those 100 rounds, most in rapid secession, it ran without failure aside from the bolt catch. Brass ejected consistently at the 2:00 position. The bolt catch is currently 70/30, 70% of the time it works, 30% of the time it returns to battery. I did cut 2 coils off the spring and did not shave the buffer/bumper.


















































