Magwell Installation

 

Hammer and Hammer Spring Installation

Cougar Hammer spring cap removal

Insure the hammer is down.  Prop the gun on something that won't destroy the  finish (I use a hockey puck) and drive the pin out.  The punch you use to drive the pin out will prevent the cap from flying away.

PX4 trigger weight

PX4 Sights

92/96 Trigger Weights