Super Black Eagle II 12ga. Field Barrel, Crio Choke, Realtree Max-5. The Realtree Max-5 Super Black Eagle II 12 gauge shotgun barrels are available in 26" & 28” lengths, and come standard with 1x crio choke tube and a red fiber optic front sight. This barrel will also fit the original Super Black Eagle. In order for this to fit you must use a Super Black Eagle II forend.