Quote Originally Posted by Doc Safari View Post

I also noticed the buffer is black and unmarked. The recoil spring is silver, plain metal finish. Not being familiar with AR pistols I don't know if this is normal.
The buffer is probably a Carbine weight. Probably not ideal for that gun. Even with my H2 it felt over gassed. The spring is just the cheapest spring they could find. Get a real milspec one for ~$5.