ODIN Works Extended Magazine Release Gen III Black. Machined from billet 6061 aluminum and designed to work with KNS pins and the BAD lever. The XMR3 has the largest profile yet 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 Gen III: Manufacturer: ODIN Works Gun Model: AR-15 AR-10 Fabric/Material: 6061 Billet aluminum Condition: New Features of ODIN Works XMR3 - Extended Magazine Release Gen III: Compatible with BAD Lever. Compatible with KNS Pins. Compatible with both AR15 and AR10 lower receivers. Releases magazine without changing grip or position. 0.1 oz (including paddle button and screws). Large surface area for quick magazine reloads. Ergonomic design and comfortable operation. Contoured for positive depression and reduced slip. Easy to reach. Easy to install. Package Contents: ODIN Works Extended Magazine Release Gen III ACC-XMR3 What firearm models does the manufacturer say ODIN Works Extended Magazine Release Gen III is compatible with? The manufacturer says that ODIN Works Extended Magazine Release Gen III is compatible with AR-15 AR-10ODIN Works ACC-XMR3-BLK: Extended Magazine Release Gen III Black