Shield Arms Glock 43X/48 Handgun Magazine Catch Release Black. While it remains compatible with plastic OEM magazines it can cause increased wear on plastic mags with prolonged use 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 may not work with gen 2 and 3 S15 mags. We recommend upgrading to one of our steel catch offerings. Specifications for Shield Arms Magazine Catch/Release: Manufacturer: Shield Arms Gun Make: Glock Gun Model: Glock 48 Glock 43X Model Generation: 2 1 Hand: Ambidextrous Fabric/Material: Steel Features of Shield Arms Magazine Catch/Release Steel mag catch several finish options Ambidextrous Compatible with Gen 1 Gen 2 and Gen 3 S15 magazines Chamfered textured button Optimized for use with Shield arms S15 magazines Lower profile for concealed carry Package Contents: Shield Arms Magazine Catch/Release What firearm models does the manufacturer say Shield Arms Magazine Catch/Release is compatible with? The manufacturer suggests that Shield Arms Magazine Catch/Release is compatible with Glock 43X Glock 48Shield Arms G43X-EMR-BLK: Glock 43X/48 Handgun Magazine Catch Release Black