The EVO 3.5 is the best self-defense connector made and by changing a few springs you can also have the best sport or enhanced self-defense trigger. The EVO is Smoother, Lighter, Shorter and eliminates trigger Over-travel.
 
Lighter and smoother trigger pull
Fixes Pre-Travel Resistance
Polished contact points
Competition or Defense
 
NOTE* This connector requires some gun smithing to function properly - installation is reccomended by a certififed gunsmith.