If you're aiming for a truly lightweight rifle platform, then shaving off every bit of metal is critical, even on the small components. To support AR builders in this goal, Armaspec developed its AR-15 B2 Extended Magazine Release. This extended magazine release provides an enhanced overall length over a mil-spec magazine release, so you'll be sure to get more positive engagement when you go to release a magazine. However, the skeletonized construction of this mag release means that all unnecessary material has been removed without compromising the strength of the design, so you'll have the lightest release possible on your rifle. The Armaspec AR-15 B2 Extended Mag Releases are compatible with all 5.56/.223 and 7.62/.308 AR receivers.