01-11-2015, 05:13 AM
I used a low pro gas block. Ar15 bcg. And a h3 buffer. The only ammo I'm using is factory hornady sst. It took awhile for me to get it to work. I ended up putting the gas block right against shoulder. That was the only way I could get enough restriction. An adjustable gas block didn't help much. It just made my hand guard hard to put on. I did notice that my buffer spring was long by about .75. The coils were were fewer and farther apart.

