Combat Armory Locking Block fits Glock GEN 3-4 G19, 23, 32, 38
Combat Armory machinist take pride in delivering the very best for our customers used by Military, Police, and Firearms enthusiasts
Used this on a gsx100 build. Fit perfectly
Works great have had no issues in a Glock build. Used in both a gen 3 19 frame and a FMK AG1 g19 frame. Fits perfect and no issues with functionality.