The Orthos Arms Black River MFG Battle Drum 12 Gauge Shotgun Drum Magazine delivers high-capacity performance in a compact, purpose-built design. Built around the proven MKA 1919 pattern, this...

The Black River MFG Battle Drum 12 Gauge Shotgun Drum Magazine delivers high-capacity performance in a compact, rugged package. Built around the proven MKA 1919 pattern, this 20-round drum is...

The Black River MFG Battle Drum 12 Gauge Shotgun Drum Magazine delivers extended capacity and smooth operation for 1919-pattern semi-auto shotguns. Built around a rugged polymer body with a clear...

The Black River MFG Battle Drum 12 Gauge Shotgun Drum Magazine delivers extended capacity and smooth operation for MKA 1919 pattern semi-auto shotguns. Built around a patented EZ Load hand wheel and...

The Black River MFG Battle Drum 12 Gauge Shotgun Drum Magazine delivers a high-capacity upgrade for MKA 1919 pattern semi-auto shotguns. Built around a patented EZ Load wheel and heat-treated...

The Black River MFG Battle Drum 12 Gauge Shotgun Drum Magazine delivers extended capacity and smooth operation for MKA 1919 pattern shotguns. Built around a rugged polymer body with a clear front...

The Black River MFG Battle Drum 12 Gauge Semi-Auto Shotgun Drum Magazine delivers extended capacity and smooth feeding for 1919-pattern shotguns. Built around a robust drum body with a clear front...

The Black River MFG Battle Drum 12 Gauge Semi-Auto Shotgun Drum Magazine delivers compact, high-capacity performance for MKA 1919-pattern shotguns. Built around a rugged polymer drum with...