The ODIN Works Extended Magazine Release is machined from billet 6061 aluminum and designed to work with KNS pins. The XMR is 4x larger than a mil spec button making it easily accessible by all shapes and sizes of hands and fingers. Works with both AR15 and AR10 lower receivers. Easy install that takes minutes. Specifications for ODIN Works Extended Magazine Release: Manufacturer: ODIN Works Gun Model: AR-15 Fabric/Material: 6061 Billet aluminum Condition: New Features of ODIN Works Extended Magazine Release: 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 and reduced slip. Anodized. Weight: 0.15oz (including button, paddle, and screws). All parts included. Easy drop in installation. Package Contents: ODIN Works Extended Magazine Release This product is compatible with the following gun models: AR-15