Armanov RACE Magazine Base pad for CZ gives you the best grip and durability. Designed with advanced sports and professional competition shooters. They are legal for IPSC production division and standard division (fits IPSC box) and IDPA. Precise cuts and grooves are machined across 3 sides to ensure you the fastest and the most precise reloads with one hand. The grip is really hard and will stay in place with a tight fit. Base pads also add one round to increase the magazine capacity from 17 to 18 and works perfectly with the standard stock magazine springs.