This is a factory Ohio Ordnance Works H.C.A.R. 30-round magazine in .30-06 Springfield.

Featuring a 30-round capacity in a durable steel body, this OOW HCAR magazine is nothing short of quality.

The Heavy Counter Assault Rifle (HCAR) is an extremely interesting design based almost entirely on the WW2 BAR (A2 variant).

More information about the H.C.A.R.