Tiger Rock AR-15 Lower Receiver Magazine Catch Assembly w/ Button and Spring Black. This Tiger Rock solution eliminates the problem by providing an easy and economical way to upgrade your AR-15 or build one from scratch. The TRC-15MC allows you to easily install a magazine catch into your stripped AR-15 or bolt action rifle simply by replacing the magazine catch body with the one included in the kit. Constructed of high quality steel the TRC-15MC will provide many years of reliable service. A machined button with a knurled edge gives you an excellent grip on your magazine. The spring also helps to keep you magazine catch open accidentally. The well thought out design includes a generously sized rear tang for a large spring and a sleek profile. The TRC-15MC gives you all the benefits of an aftermarket magazine catch while eliminating the annoyance of a snagging or tearing open the mag tube. Specifications for Tiger Rock AR-15 Lower Receiver Magazine Catch Assembly w/ Button and Spring: Manufacturer: Tiger Rock Color: Black Finish: Matte Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Package Contents: Tiger Rock AR-15 Lower Receiver Magazine Catch Magazine Catch Button Magazine Catch Spring Tiger Rock MC: Magazine Catch Assembly w/Button and Spring