The Panzer Arms M4 Tactical is a clone of the legendary M4 shotgun. It is a reliable, durable inertia-driven semi-automatic 12 gauge shotgun. Featuring comfortable and ergonomic furniture; extended tube magazine; sling attachment points; M4 gas system; rail section runs along the top of the receiver and is perfect for optics mounting. If you do not wish to mount an optic, ghost ring sights come standard. This particular model comes with a unique handsome walnut buttstock w/handguard. Parts are interchangeable with the Benelli M4. The buffer tube is notched in 3 positions. Includes magazine and choke tube set.