Shield Arms Standard S15 Magazine Release Glock 43X/48 9 mm Luger Gen 1/2 Ambidextrous Anodized Black. This steel mag catch is required to work with the Shield Arms S15 magazine. Using this steel mag catch with plastic OEM magazines can cause increased wear on plastic mags and OEM mags may not drop free. We do not recommend using our steel mag catch with plastic OEM mags. We recommend steel on steel or plastic on plastic. If you have a first generation aluminum mag catch it is required to upgrade to one of these steel catch offerings. Specifications for Shield Arms Standard S15 Glock 43X/48 9 mm Luger Magazine Release: Manufacturer: Shield Arms Gun Make: Glock Gun Model: Glock 48 Glock 43X Hand: Ambidextrous Color: Black Finish: Anodized Fabric/Material: Steel Included Accessories: None Condition: New Features of Shield Arms Standard S15 Glock 43X/48 9 mm Luger Magazine Release: Steel mag catch several finish options Compatible with all generations of S15 magazines Chamfered textured button Optimized for use with Shield Arms S15 magazines Lower profile for concealed carry Package Contents: Shield Arms Standard S15 Glock 43X/48 9 mm Luger Magazine Release What firearm models does the manufacturer say Shield Arms Standard S15 Glock 43X/48 9 mm Luger Magazine Release is compatible with? The manufacturer suggests that Shield Arms Standard S15 Glock 43X/48 9 mm Luger Magazine Release is compatible with Glock 43X Glock 48Shield Arms G43XEMRBLK: Standard S15 Magazine Release Glock 43X/48 9 mm Luger Gen 1/2 Ambidextrous Anodized Black