CMMG Inc AR15 Ambi Magazine Catch Mag Release Button and Spring Black. With Ambi controls evolving its becoming more of a tool that everyone can use even left handed shooters This Ambi Mag Catch works in place of a standard mag catch to allow left handed shooters drop their mag without having to switch to your right had for the mag release. Easy drop in replacement and blends in to the style of any AR. Specifications for Cmmg Inc AR15 Ambi Magazine Catch w/Mag Release Button and Spring: Manufacturer: CMMG Gun Model: AR-15 Gun Type: Rifle Package Contents: CMMG Inc AR15 Ambi Magazine Catch w/Mag Release Button and Spring What firearm models does the manufacturer say Cmmg Inc AR15 Ambi Magazine Catch w/Mag Release Button and Spring is compatible with? The manufacturer says that Cmmg Inc AR15 Ambi Magazine Catch w/Mag Release Button and Spring is compatible with AR-15CMMG Inc 55AFF6E: AR15 Ambi Magazine Catch Mag Release Button and Spring Black