HK UMP 45 - Semi Auto Bolt Carrier Complete with Ejector
Includes Firing pin Retaining Pin
Marked .45 Auto just like the OEM carrier
The semi auto bolt group is required for HK USC to HK UMP caliber conversions.
You can get it here: https://www.hkparts.net/shop/pc/Semi-Auto-Bolt-Carrier-45-USC-UMP-12p18588.htm
Or by calling us at 801-987-3494