I had the barrel cut to 18 inches and this caused me some troubles with cycling because it did not have enough gas. I had ADCO open the gas port and it worked better but still not 100% so I ended up making a low mass buffer by taking apart 3 rifle buffers removing the heavy weights and only leaving the lighter ones in and now its 100%. Shoots very well and seems to have gotten better as I shoot it. The average with the Sierra load has been .75 so far . (22.3 grains of N135, 77 grain Sierra SMK with cannular Federal match primers Lake City brass avg velocity 2700 fps)
I don't like the reticle in the scope that much as its very fine and hard to see on some backgrounds. I will be getting a different scope when funding allows.
