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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Out Of Stock
Picatinny Optic Mount - Holosun 510C, HM3X Combo
Holosun
$599.95Holosun 510C & HM3X Combo - Optic & Magnifier The HS510C is a versatile open reflex optic designed for long gun applications. HS510C is at home on carbines, PCCs, and shotguns due its durable design. HS510C features and aluminum housing...HKP-21657$599.95 -
HK UMP 45 Magazine Spring - .45 ACP - 15 Round - US
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 .45 Semi-Auto Bolt Group - Complete
Michaels Machines
$749.95Michaels Machines HK UMP .45 Semi-Auto Bolt Group - Complete MM’s UMP Tungsten filled UMP .45 bolt carrier complete. Heat treated, parkarized and polished for the best look and function possible, as an added bonus it now includes German HK...HKP-20627$749.95 -
HK UMP .40 Semi-Auto Bolt Group - Complete
Michaels Machines
$649.95Michaels Machines HK UMP .40 Semi-Auto Bolt Group - Complete MM’s UMP tungsten filled UMP .40 bolt carrier. Heat treated, parkarized and polished for the best look and function possible, as an added bonus it now includes German HK internals which...HKP-20626$649.95 -
HK UMP, USC Stock Block C
HDPS
$159.95HDPS HK UMP & USC Stock Block C Each unit comes with a new push-pin design. This is the part to use with the ACE hinge part number FSM-TB (push button folding stock) and non-folding push bottom (pig nose). This is just...HKP-02613$159.95 -
HK USC, SL8 Hammer
H&K Heckler & Koch
$98.95H&K USC/SL8 (.45 ACP/5.56/.223) Hammer Compatible With: HK USC .45 ACP HK SL8 .223/5.56HKP-16352$98.95 -
Out Of Stock
HK UMP45 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 ParkerizedHKP-18751$369.95 -
Arm Brace Hook
MI Midwest Industries
$97.95Midwest Industries Arm Brace Hook The Arm Brace Hook is designed for pistols that use a 1.2" diameter buffer tube. It provides a secure and stable point of contact while offering a built-in, ambidextrous QD sling interface. Specifications: Works...HKP-22417$97.95 -
On Sale
HK UMP Bolt Carrier - Semi-Auto - Complete - .45 S&W
OMEGA
Now: $224.95Was: $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...HKP-21316Now: $224.95Was: $359.95 -
Keymount Muzzle Brake - Threaded 5/8x24
Wasatch Arms
$89.95Wasatch Arms Keymount Muzzle Brake - Threaded 5/8x24 The Wasatch Arms keymount brake is compatible with the Dead Air keymount system. The brake has no outisde flats, so there is no need for timing shims or crush washers...HKP-20298$89.95 -
HK UMP Flash Hider - 5 Prong - 10mm, .40 S&W, .45 ACP
HDPS
$159.95HK UMP Flash Hider - 5 Prong - 10mm, .40, .45 Designed to fit flanged UMP barrels. Will fit factory HK UMP barrels as well as the UMP 10mm/.40/.45/ US-made barrels offered by HK Parts. Made in USA Compatible With: HK UMP .40 S&W HK UMP .10mm HK UMP ...HKP-02368$159.95 -
Out Of Stock
Compact Vertical Foregrip With Hand Stop - Picatinny
JMK
$98.95Compact Vertical Foregrip with Hand stop - Picatinny The JMK Vertical Foregrips are ideally suited for applications with restricted space. All grips are precision-machined from black walnut and complemented by a 6061 aircraft-grade aluminum handstop...HKP-22411-M$98.95