HK UMP/USC Series
Choose from an expansive selection of HK UMP and USC parts, such as HK UMP Barrels and HK USC Stocks, crafted for those who value reliability and performance. Upgrade with HK USC Handguards and HK UMP Triggers, and experience the difference in quality and craftsmanship.
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H&K USC (.45 ACP) Magazine Floor Plate
H&K Heckler & Koch
$8.95H&K USC (.45 ACP) Magazine Floor PlateHKP-16380$8.95 -
Out Of Stock
H&K USC (.45 ACP) Magazine Locking Plate Insert
H&K Heckler & Koch
$8.95H&K USC (.45 ACP) Magazine Locking Plate InsertHKP-16384$8.95 -
Out Of Stock
HK UMP (.40 S&W/.45 ACP/9mm) Paddle Mag Release
$9.95UMP Paddle Magazine Release - US Made New UMP Mag release. This is a very common repair & replacement part as they are fairly easy to break on the UMP lower. Simple & easy to install no gunsmith needed or required. Compatible With: UMP .45 UMP ...HKP-18773$9.95 -
HK UMP .45 15 Round Magazine Spring
HKP HK Parts
$9.95HK UMP .45 15 Round Magazine Spring Perfect for spares and to have on hand as these are consumable item that needs to be replaced from time to time. A must have item if you own a USC/UMP conversion or UMP.HKP-20679$9.95 -
Out Of Stock
HK UMP Paddle Mag Release Complete Assembly
$19.95UMP Paddle Magazine Release - US Made - Assembly Complete New UMP Mag release. This is a very common repair & replacement part as they are fairly easy to break on the UMP lower. Simple & easy to install no gunsmith needed or required. Compatible...HKP-19499$19.95 -
Out Of Stock
HK UMP/USC (.40 S&W) Extractor
$39.95New US-Made USC Or UMP .40 Extractor This part is a repair and replacement item, as these are prone to breakage, and it's a part that's hard to find and a great item to have on hand. Please Note: HK considers this a high wear and replacement...HKP-02624$39.95 -
Out Of Stock
HK UMP/USC (.40 S&W/.45 ACP/9mm) Ejector Lever
$34.95HK UMP, USC Ejector Lever A great spare to have on hand as they are prone to shearing off with use and must be replaced. Perfect for the Omega and Tommy Built Tactical builds. Compatible With: UMP .45 UMP .40 UMP 9mm USC .45 and all caliber of...HKP-18508$34.95 -
On Sale
HK USC (.45 ACP) USC to UMP Conversion ACR Stock Block - BLEMISHED
Now: $88.95Was: $149.95HK USC (.45 ACP) USC to UMP Conversion ACR Stock Block - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. A new product that allows you to add the widely...HKP-17357-BNow: $88.95Was: $149.95 -
Out Of Stock
HK USC, HK UMP Front Sight - Black
USA
$11.95Front Sight - HK USC, UMP - USA Easy to swap out with just knock out the roll pin replace and then re-insert the roll pin. Common wear or breakage part. Compatible With: All models of USC and UMP'sHKP-19124$11.95 -
Out Of Stock
HKP HK UMP (9mm) Semi Auto Bolt
HKP HK Parts
$369.95HK UMP 9mm -Semi-Auto Bolt Group The semi-auto bolt group is required for HK USC to HK UMP caliber conversions. The full-auto bolt carrier will not work in HK USC rifles. Includes: Extractor Firing pin Retaining Pin Firing pin &...HKP-18752$369.95 -
Out Of Stock
HKP HK UMP (9mm) Standard Barrel
HKP HK Parts
$299.95HK UMP 9mm Barrel US made replica of the HK UMP 9mm barrel. Counts as one US made compliant part as an added bonus.HKP-18640$299.95 -
Out Of Stock
HKP HK UMP .45 ACP Barrel - Threaded 16x1 RH - 3-Lug
HKP HK Parts
$399.95HKP H&K UMP .45 ACP Barrel - Threaded 16x1 RH - 3-Lug New USA made .45 ACP 8" barrel for the UMP or Omega firearms. Each barrel is threaded 16x1 RH and 3-Lug tipped. The finest barrel for the UMP .45 ACP on the market. Specifications: Overall Length...HKP-18511$399.95 -
Out Of StockOn Sale
HKP HK UMP 2 Position Lower Grip Frame - FDE - BLEMISHED
HKP HK Parts
Now: $104.95Was: $149.95HKP HK UMP 2 Position Lower Grip Frame - FDE - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. New UMP Lower. 2 position settings (S,F). Perfect for all...HKP-19384-BNow: $104.95Was: $149.95 -
HKP HK UMP 5 Prong Flash Hider - 5/8x24
HKP HK Parts
$67.95HKP HK UMP 5 Prong Flash Hider - 5/8x24 Compatible With: HK UMPHKP-21523$67.95 -
Out Of Stock
HKP HK UMP 9mm Conversion Kit -Threaded 1/2x28
HKP HK Parts
$679.95HKP HK UMP 9mm Conversion Kit -Threaded 1/2x28 9mm UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those that have already done the USC-UMP conversion. The conversion parts are drop in with...HKP-02287$679.95 -
Out Of Stock
HKP HK USC (.45 ACP) Carbine Mag Release - Extended
HKP HK Parts
$24.95HK USC Alloy Mag Release - Extended Billeted alloy USC magazine release. This is a very common repair & replacement part as they are fairly easy to break on the USC lower. With this new metal mag release you get more surface area as well as a much...HKP-17918$24.95 -
Out Of Stock
HKP/H&K UMP 9mm Conversion Kit - Threaded Barrel 1/2x28 - 3-Lug
HKP HK Parts
$999.95HKP/H&K UMP 9mm Conversion Kit - Threaded Barrel 1/2x28 - 3-Lug 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 total...HKP-02285$999.95 -
Out Of Stock
Michaels Machines HK USC/UMP 9mm Semi Auto Bolt Carrier - Incomplete
Michaels Machines
$499.95HK UMP 9mm - Semi-Auto Bolt Stripped The semi-auto bolt is required for HK USC to HK UMP caliber conversions. The full-auto bolt carrier will not work in HK USC rifles. Features: Tungsten filled Heat treated Parkerized & polished Marked 9X19mm just...HKP-19871$499.95 -
Omega HK UMP Rear Sight Complete
OMEGA
$39.95Omega HK UMP Rear Sight Complete: All the parts needed for the rear sight on a Gideon Shadow UMP style build. New USA made parts for your build. Will only work with Gideon Shadow. Will not work with a German UMP receiver, DEF Gunz or TMP.HKP-21266$39.95