I performed my own action job on a new S&W 929 using the TK's Diamond Speed Hammer, spring kit and extended firing pin. The factor double action pull weight was 12lb 3 oz. The Diamond Speed Hammer fit perfectly with the factory trigger and required no fitting. These parts along with a little polishing resulted in a very smooth trigger pull of 6lb and 12 oz with perfect function using Federal Primers and 0.035 TK moon clips. Ultimately, to provide a safety margin, I decided to finalized the trigger pull at 7 1/2 lbs. For aesthetics, I used the TK kit to replace the factory lock. After watching a Youtube video, the lock was replaced within 2 minutes. I highly recommend TK revolver parts.
