Abstract: Presented are a firearm attachment and a method. An exemplary firearm attachment includes a gunstock comprising a cavity for attachment to a barrel, a handgrip port including a mount, a buttstock port, and a magazine port, the magazine port located on the gunstock to align with a magazine, the mount operable to slideably move and be affixed along a longitudinal axis of the gunstock. The firearm attachment further includes a handgrip, the handgrip removeably attached to the mount, the handgrip able to rotate relative to the gunstock to a plurality of locations, wherein the handgrip can be rotatably fixed at each one of the plurality of locations. The firearm attachment also includes a buttstock and a forearm grip.