HDPS UMP barrels are perfect for the USC to UMP conversions and for a replacement UMP .45 barrel. They are considered by many to be the finest US-made barrel available. Each barrel is an exact reproduction with all HK German specs.

Length: 7.87 inches

HDPS Barrel Advantages:

• 4140 Chrome Molly Stainless Steel
• High Quality CNC finished
• Stress relieved and air gaged to +/- .0002 specs
• Heckler & Koch factory specifications

All barrels are compatible with USC bolt/carrier and UMP bolt/carrier and are drop in replacements for your HK USC or UMP conversions (NFA rules apply). As an added bonus this item counts as 1 of the 3 needed US 922R compliant parts for a USC-UMP conversion.