Lancer, the company who makes the L5 and L7 polymer AR magazines, is releasing the Adaptive Magwell for all mil-spec 5.56 AR lowers.
The Lancer Adaptive Magwell is a simple, easy-to-install component engineered to significantly reduce reload times for law enforcement officers and Soldiers. The new magwell will debut at SHOT Show® 2015.They currently offer it as a two-piece magwell. They say the one-piece unit will be available by March 2015.
With its funnel-like design, the adaptive magwell increases the diameter of the magwell and trigger guard area. The component is designed to fit Mil spec 5.56 AR style rifles with winter trigger guards and requires no tools to install. The adaptive magwell is machined from 6061 T6 aluminum.