This Cmmg, Inc AR15, Ambi Magazine Catch works in place of a standard magazine catch to allow left-handed shooters to drop their mag without having to switch to their right hand for the mag release. The experts at CMMG built these Gun Parts from lightweight steel and allow for easy magazine swaps, and they are securely held in place with no need for springs or forward assists. The Cmmg, Inc AR-15 Ambidextrous Magazine Catch goes in place of a standard magazine catch to allow left-handed shooters drop their mag without having to switch to their right hand for the magazine release. Install a Cmmg, Inc AR-15 Ambidextrous Magazine Catch w/ Right-Hand that works with your weapon platform of choice. Specifications for Cmmg, Inc AR15, Ambi Magazine Catch: Manufacturer: CMMG Gun Model: AR-15 Gun Type: Rifle Condition: New Package Contents: Cmmg, Inc AR15, Ambi Magazine Catch This product is compatible with the following gun models: AR-15