I removed the over-travel from my P250 trigger by cutting .100 inch sections of stainless hypodermic tubing with thin, medium, and thick walls. I used a cheap, small cut-off saw which has a replacement abrasive blade and a simple jig I made (see photo). I slid it over the right side of the Hammer Pivot Pin (see photo). I have two FCUs and both took a different thickness to be perfect. A small amount makes the difference between little to no over-travel and not firing. Dry-fire testing with your pistol completely reassembled is a MUST. IF THE HAMMER DOES NOT FALL, YOU MUST USE THE NEXT SMALLER RING.