Lancer Systems One Piece Adaptive Magwell . 56 AR style rifles. It is installed by opening the winter trigger guard and attaching the lower half to the trigger then engaging the lower component to the trigger guard attachment on the rifle. The upper component is then slid on from the front and attached with two allen screws. This will increase the diameter of the magwell increasing the speed in which the rifle can be reloaded. Specifications for Lancer Adaptive Magwells: Manufacturer: Lancer Systems Additional Features: One Piece Condition: New Country of Origin: USA Package Contents: Lancer Adaptive Magwells The Lancer Adaptive Magwell is a quality addition to the Lancer Systems lineup. For more great deals on AR 15 Parts by Lancer Systems please browse our Lancer Gun Parts page. Lancer One Piece Adaptive Magwell - LAM-QD