The Cross Armory Extended Magazine Catch is CNC machined from 7075 T6 billet aircraft aluminum and anodized for corrosion resistance. It also has improved geometry making the install time minimal, finger response optimal, with increased strength and reliability. This Extended Magazine Catch is a necessity for any Glock or P80. FITS GLOCK GEN1-3 MODELS 17, 19, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 37 and P80 MODELS V2, C & SC