Mag Releases, for STI 2011, Gen 1 Grips, by Dawson Precision
Oversized 2011 Grip Bushings (Dawson Exclusive) are made to bring back that tight fit to 2011 frame and grip, when the frame and grip bushing holes have enlarged. Now you can make it just like when it was new. Maybe you don't need it now, but it's nice to have it when you do.
Standard size 2011 Grip Bushings also available for in spec grip and frame holes.