Canik designed extended magazine catch assembly offers innovative styling and functionality in 4 different sizes The magazine button and catch are made with high tech MIM (metal injection molding). For maximum durability, all parts (except magazine catch spring) are coated with high quality Tenifer finish. 4 different btton options are provided for optimal tactile response, sporting usage, and aesthetics. Features: MIM (Metal injection molding)Compatible with all TP series pistols4 different sizes: standard, small, medium, & largeHigh quality Tenifer finishReversible design for ambidextrous usage