THE BASIC PRINCIPLES OF INC.

Although the Gen4 adjustments get the job done nicely on all of the Glock body measurements, they seriously shine at the extremes, specifically, the most important frame products (G20 and G21) plus the smallest (Subcompacts). In the case with the large-hitting ten mm G20 and .45 ACP G21, the twin-spring recoil assembly nicely reduces the level of f