This magazine base pad has high gripping force thanks to deep side grooves so handling is much more secure and precise. Bottom of magazine pad is flat and can be engraved in our shop. Base pad also adds two rounds to increase the magazine capacity from 17 to 19. Made in Europe from solid piece of aircraft grade aluminum. Legal for IPSC production division. Compatible with All CZ 75 17rnd capacity magazines. CZ Shaodow2 for CZ and Mec-Gar Magazines. Not compatible with SP-01 Shadow orginal CZ magazines with 18rnd capacity, but will fit SP-01 with 17rnd magazines.