Just got back my S&W 41 from the Gunsmith which was being threaded for my suppressor, and found out he threaded it 5/8-24 reverse thread I guess Soundtech roll with that thread size for there Silencers ???? He said it would not get lose while shooting it aaaah ok I guess anyway the waiting is over and I couldn`t ask for a nicer package. The GunSmith said it`s the only 41 he ever done and seen suppressed for that matter and it shoots like a dream. between my Walther P22 with a Omega can and the Smith 41 the Smith takes it hands down... a few pic`s of the complete lead tosser.