I have a laminate stock and would not risk messing it up. But I don’t tinker. I set my Huma for 135 bar and am getting 58 shots on the reg at 820 fps with the jumbo heavies. Hammer spring set to optimal . And today shot to figure all my holdovers. I am shooting 3/4” groups at 100 yds. I will never mess with it again unless something breaks!. I just left the stock off when I did the crony testing for hammer spring and shot string.
awesome gun!