The Armaspec B1 is an extended magazine release designed to extend the length of the factory button. The B1 makes it easier to release the magazine without changing the grip position. FeaturesCompatible with BAD Lever and similar devicesLarge surface area for quick magazine reloadsEasy to reach ergonomic designRelease magazine without changing grip or positionSerrated for positive depression and reduced slipEasy drop-in installationCompatible with most AR-15 and LR-308 receivers