Model selections are Left-Hand and Right-Hand specific Designed to eliminate any hard angles that might inhibit inserting the magazine Enhanced ergonomic setting with extended knurling (1/32") Slightly longer engagement with the magazine Comes standard in Black Nitride coating PVD Coating Options Available In: Gold, Bronze, Peacock Blue, and DLC WARNING: DOES NOT FUNCTION WITH PLASTIC OEM MAGS Made in the USA 100% Lifetime Warranty Product Description The Premium S15 Steel Mag Catch for the Glock 43X/48 has been optimized for left or right-handed use specifically and is NOT ambidextrous. Because the catch is not ambidextrous, Shield Arms were able to eliminate hard angles on the bottom of the catch for smoother reloads with their steel S15 magazine. The catch face has been slightly extended vs. their Standard Mag Catch by ~.03", and there is slightly MORE magazine engagement with this premium catch.