HK UMP/USC Bolt Carrier Groups
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HDPS HK UMP (.45 ACP) Threaded Barrel - 16x1 LH
HDPS
$349.95HK UMP & USC 45 ACP 8" Threaded Barrel HDPS UMP barrels are perfect for the USC to UMP conversions and a replacement UMP .45 barrel. They are considered by many to be the finest US-made barrel available. This barrel is the same length as a factory HK...$349.95 -
USA HK UMP/USC .45 Semi Auto Bolt Carrier - Complete
USA
$399.95USA HK UMP/USC .45 Semi Auto Bolt Carrier - Complete Replacement part for USC to UMP conversions. Marked .45 semi auto just like the OEM carrier. Includes: Extractor Firing Pin Firing Pin Spring Firing Pin Retaining Pin Compatible With: HK UMP ...$399.95 -
Out Of Stock
HK UMP (.45 ACP) Bolt Group
$369.95HK UMP .45 Tungsten Filled Semi Auto Bolt Group Complete. The semi auto bolt group is required for HK USC to HK UMP caliber conversions. Comes complete less the recoil assembly. Specifications: Tungsten filled Heat treated Parkerized$369.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Lower Bolt Carrier Guide
H&K Heckler & Koch
$12.95HK German All Steel UMP Carrier Guide This is the steel piece the guides the UMP bolt carrier. Compatible With: All HK UMP lowers$12.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Firing Pin Retainer Pin
H&K Heckler & Koch
$7.95HK UMP Firing Pin - Retainter Pin This is the pin that trips the trip lever on the UMP lower.$7.95 -
Out Of Stock
MM HK UMP 9mm Conversion Kit - 16 inch Barrel
Michaels Machines
$889.95HK UMP 9mm Conversion Kit - US-Made UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those who have already done the USC-UMP conversion. The conversion parts are drop-in, with the...$889.95 -
H&K UMP (.40 S&W) Bolt Group - Used
H&K Heckler & Koch
$649.95German UMP .40 factory F/A Bolt Group - Complete This item is used in very good shape or better.$649.95 -
Out Of Stock
HK UMP (9mm) Extractor
USA
$39.95New US-Made USC & UMP 9mm Extractor: This is the perfect spare part for your UMP or USC 9mm conversion. Please Note: HK considers this a high wear and replacement item. Once it's removed from the carrier, the spring tension...$39.95 -
MM HK UMP (.40 S&W) Conversion Kit
Michaels Machines
$999.95HK UMP 40 Caliber Conversion Kit With this UMP Conversion kit, UMP .45 sub guns can be converted to .40 caliber. Machined bolt carriers are available for USC/UMP conversion sub guns. This is a simple drop-in conversion. The time required to change...$999.95 -
Out Of Stock
MM HK UMP (9mm) Full Auto Bolt
Michaels Machines
$699.95HK UMP 9mm - Full Auto Bolt - Stripped The full auto bolt carrier is for HK UMP rifles. The full-auto bolt carrier will not work in the HK USC conversion rifles. One of the finest aftermarket carriers you can buy. Features: Tungsten filled Heat...$699.95 -
Out Of Stock
MM HK UMP/USC (9mm) Semi Auto Bolt Carrier
Michaels Machines
$699.95HK UMP/USC (9mm) Semi Auto Bolt Carrier The semi-auto bolt group is needed for HK USC to HK UMP caliber conversions. The full-auto bolt carrier will not work in HK USC rifles. Specifications: Tungsten Filled Heat Treated Parkerized &...$699.95 -
Omega HK UMP .45 Semi Auto Bolt Carrier - Complete
OMEGA
$359.95Omega HK UMP .45 Bolt Carrier Complete - Semi Auto Replacement part for USC to UMP conversions. Marked .45 semi auto just like the OEM carrier. Compatible With: HK UMP .45 Includes: Extractor Firing Pin Firing Pin Spring Firing Pin Retaining Pin The...$359.95