Odin extended magazine release xmr black for ar-15 FEATURES-Matte black anodized finish-Machined from billet 6061 aluminum-Works with both AR15 & AR10 lower receivers-Compatible with KNS Pins -NOT recommended for use with BAD lever-Four times larger than factory magazine buttons-Large surface area for quick magazine reloads-Easy to reach-Ergonomic design-Release magazine without changing grip or position-Contoured for positive depression & reduced slip-Weight: 0.15 oz. (including button, paddle & screws)-All parts included-Easy drop-in installation Other Features: Comes with screw and button,.78" wide by.94" long, works with kns pins