*BLACK FRIDAY PRODUCT. DO NOT REACTIVATE.* Complete, lightweight and durable, the Plumcrazy Firearms Gen II polymer AR15 lower receiver with a 6 position collapsible stock, carbine buffer and spring, marked multi cal. The receiver is mil spec dimension to accommodate most if not all applicable parts and accessories. As always, any modification should be done by a qualified gunsmith. Add an upper receiver of your choice, a little ammo, and you are ready for the range or great outdoors. Plumcrazy Firearms has established itself in the gun business for almost 20 years.