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 UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Buttstock Locking Piece
H&K Heckler & Koch
$14.95HK G36 & UMP Buttstock Push Button This is a factory HK German replacement button for the HK G36 and HK UMP stock.HKP-02468$14.95 -
HK MP5, 94 UMP Style Folding Stock With HK Parts Stock Adapter
USA
$249.95HK MP5, 94 UMP Style Folding Stock With HK Parts Stock Adapter New US UMP style folding stock assembled with our own HK Parts stock adapter. Our HK Parts stock adapter was made from a solid billet of CNC machined aircraft grade aluminum with QD sling...HKP-20215$249.95 -
UTG Quick Detach Low Profile Folding Grip
UTG
$49.95UTG Quick Detach Low Profile Folding Grip Features: Unique knurled surface for the most solid grip Smart Posi-Lock cross bolt and spring tensioned locking plate with steel insert for the most secure installation Fully adjustable quick detachable...HKP-15029$49.95 -
Out Of Stock
HKP .45 ACP Knurled Micro Comp - Threaded .578x28 RH
HKP HK Parts
$29.95HKP .45 ACP Knurled Micro Comp - Threaded .578x28 RH This new .45 ACP Tactical Slotted Micro Comp fits all HK-spec .45 ACP full-size and compact barrels threaded .578x28 RH. Designed to be lightweight and fully functional as both a compensator and thread...HKP-21175$29.95 -
HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin-Thumb Screw Style
HDPS
$74.95HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin-Thumb Screw Style The original thumb screw version for all stock block B's.HKP-15731$74.95 -
HK UMP/USC/SL8/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Front Sight Roll Pin
H&K Heckler & Koch
$5.95Front Sight Roll Pin - HK UMP, USC, G36, & SL8HKP-02158$5.95 -
Out Of Stock
HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) Complete Recoil Rod Assembly
HKP HK Parts
$29.95HK USC, UMP 45/40/9mm Recoil Spring/Rod Assembly New USA made recoil assembly complete. Our design allows for easy repair and replacement of the recoil spring itself without replacing the entire recoil assembly as found on the German recoil assemblies...HKP-17989$29.95 -
B&T Quick Detach Polymer Unigrip - Black
B&T Brugger & Thomet
$74.95B&T Quick Detach Polymer Unigrip This simple foregrip is designed to be mounted on the NAR/Picatinny rail of the firearm. The grip features an integrated storage compartment. Specifications: Color: Black Length: 5" (130mm) Weight: 113g Material:...HKP-18102$74.95 -
Out Of Stock
Ergo Sling Loop Rail Mount- Ambidextrous
Ergo
$29.95Ergo Sling Loop Rail Mount- Ambidextrous The ergonomic HK slide mount sling hook base provides an economical means for attaching an HK-style sling hook to all 1913 Picatinny rails. Perfect for mounting on a tactical rail system or other Picatinny forearm...HKP-14526$29.95 -
HK G36/UMP Folding Stock Release Spring
H&K Heckler & Koch
$9.95HK G36 Folding Stock Release Spring This is the spring that fits under the stock release button to activate the folding and retention of the G36 or UMP stock. Compatible With: HK G36 HK G36K HK G36C UMPHKP-00637$9.95 -
HDPS HK USC (.45 ACP) Faux Sound Suppressor
HDPS
$180.99HDPS HK USC (.45 ACP) Faux Sound Suppressor New second-gen, latest production HDPS Faux Sound Suppressor for the HK USC (Kit includes the Faux Sound Suppressor, lower rail, and screws) This integral one-piece design is milled from a solid...HKP-02369$180.99 -
Bore Boss Pull-Through Bore Cleaner - .44/.45
Bore Boss
$10.95Real Avid Bore Boss Pull-Through Bore Cleaner - .44/.45 From the barrel of innovation comes the ultra-compact Bore Boss, the first-ever self-storing, easy-feeding, clean-pulling, field-ready, hassle-free, pure-genius bore cleaner. The single-piece cable...HKP-19401$10.95 -
H&K German Universal Multi Tool
H&K Heckler & Koch
$79.95H&K German Universal Multi Tool This is ideal for the USC or SL8 style of weapon systems. Great multi-tool for sights, handguards, or work on any other accessories.HKP-00374$79.95 -
HK UMP & G36 Pistol Grip Storage Insert
USA
$16.95HK UMP & G36 Pistol Grip Storage Insert G36 & UMP pistol grip insert for all G36 & UMP lower housings. This is the piece that locks into place and fits in the bottom of the handle itself. This is a perfect storage location for paperwork,...HKP-20176$16.95 -
H&K USC (.45 ACP) Carbine Mag Release
H&K Heckler & Koch
$19.95H&K USC (.45 ACP) Carbine Mag Release This is a great replacement as they are prone to breakage & wear. Please Note: For those that have a USC with a bullet button and are moving to a free state and want to revert back to the...HKP-02196$19.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Firing Pin Spring
H&K Heckler & Koch
$9.95H&K UMP/USC (.40 S&W/.45 ACP/9mm) Firing Pin Spring This is a common wear and breakage item. This item also frequently becomes lost by end users when field stripping the UMP and USC Bolts. Compatible with: All HK UMP & USC FirearmsHKP-00262$9.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Magazine Release Spring
H&K Heckler & Koch
$9.95HK UMP & USC Magazine Release Spring HK German factory mag release spring for all USC and UMP mag releases. Compatible With: USC lowers UMP lowersHKP-01899$9.95 -
Magpul M-LOK QD Sling Mount
Magpul
$27.95Magpul M-LOK QD Sling Mount The M-LOK Quick Detach Sling Mount provides a forward attachment point for the Magpul MS4 Sling and other push-button QD slings. Machined from Mil-Spec anodized aluminum, the low-profile M-LOK QD Sling Mount features beveled...HKP-17268$27.95 -
B&T .45 ACP Flash Hider - 3-Lug
B&T Brugger & Thomet
$164.95B&T .45 ACP Flash Hider - 3-Lug B&T Switzerland has supplied these to law enforcement and military units around the world. Rock solid, mil-spec quality from an H&K OEM manufacturer. This flash hider slips over the end of the 3-lug barrel and...HKP-18346$164.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Complete Firing Pin Assembly
H&K Heckler & Koch
$82.95HK German USC & UMP Firing Pin Assembly Complete A great spare to have on hand as this item is a hard-to-find replacement part. Compatible With: USC 45 UMP 45 UMP 40 UMP 9mm ALL USC Conversions ALL UMP MG'sHKP-00609$82.95 -
H&K USC/UMP (.40 S&W) Extractor
H&K Heckler & Koch
$54.95HK German UMP Or USC .40 Extractor New HK German factory OEM part. This is a high wear and replacement item as the .40 cal cartridge has a high impulse that results in an increased occurrence of this extractor wearing out and breakage. A must-have...HKP-00264$54.95 -
HKP .45 ACP 5 Prong Flash Suppressor - Threaded 16x1 LH
HKP HK Parts
$99.95HKP .45 ACP 5 Prong Flash Suppressor - Threaded 16x1 LH This is the much anticipated 5-prong flash hider. This flash suppressor is ideal for your USP tactical pistol. It enhances accuracy by up to 35%, reduces recoil by up to 40%, and there is...HKP-02637$99.95 -
HKP HK UMP (.40 S&W) 15 Round Magazine
HKP HK Parts
$49.95UMP, SMG .40 Cal 15 Round Magazine - US Each ultra compact 15 round magazine will fit all HK UMP .40 caliber carbines, SMG's as well as the USC-UMP .40 caliberP conversions. Each magazine features, steel feed lips, enhanced polymer construction and all...HKP-17584$49.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Complete Recoil Rod Assembly
H&K Heckler & Koch
$79.95HK USC/UMP 45/40/9mm Recoil Spring/Rod Assembly New HK German. This is great to have as a spare as this is a repair and replacement item. Compatible With: HK UMP 45 HK USC 45 HK UMP 40 HK UMP 9mmHKP-00610$79.95 -
HKP Single Point Sling - Dark Earth
HKP HK Parts
$29.95HKP Single Point Sling - Dark Earth This sling is a must-have for those who prefer operating with a single-point sling over the traditional 3-point HK sling. Features: Super thick all Dark Earth heavy-duty corduroy nylon to withstand years of heavy...HKP-09051$29.95 -
Magpul RSA - Rail Sling Attachment
Magpul
$29.95Magpul RSA - Rail Sling Attachment Attaches to Picatinny rails for an additional point of attachment for slings.HKP-02423$29.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Lower Release Lever For Hammer
H&K Heckler & Koch
$9.95HK UMP Catch Release Lever Or Trip Lever For All UMP LowersHKP-01890$9.95 -
H&K UMP/USC (.45 ACP) HK Factory Cleaning Kit
H&K / HK Parts
$79.95Cleaning Kit For HK USC & UMP .45 ACP Subguns This Cleaning kit a genuine HK factory cleaning kit and is recommended by HK for all HK pistol owners. Includes: Saf-T-Clad cleaning rod Accessory adapter section #8-32 Patch holder Chamber face...HKP-01055$79.95 -
H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Ambidextrous Sling Loop
H&K Heckler & Koch
$40.95UMP, USC, SL8, & G36 Ambidextrous Sling Loop Or Eyebolt For Sling - German HK The addition of the HK eyelet creates a sling attachment point that will enable you to mount a sling using any of the hard mounting points located on the forearm of the...HKP-00611$40.95 -
SB Tactical HK UMP Pistol Stabilizing Brace - Black
SB Tactical
$79.95SB Tactical HK UMP Pistol Stabilizing Brace - Black The second generation of the SBT and enhances your B&T APC, HK UMP, or LWRCi SMG45 with an integral, right side-folding mechanism and an arm cuff based on the SB-Mini. The SBT-G2 provides you...HKP-20084$79.95 -
H&K Bungee Single Point Sling - 1325mm Long
H&K Heckler & Koch
$114.95H&K Bungee Single Point Sling - 1325mm Long New factory HK German manufactured single point elastic "push/pull" bungee style sling. Includes the factory sling hook and is fully adjustable for the average sized mag to use. Will fit any HK application...HKP-18728$114.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin
H&K Heckler & Koch
$5.95H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch PinHKP-16517$5.95 -
Out Of Stock
HKP HK UMP (.40 S&W/.45 ACP/9mm) Enhanced Mag Release - Billeted
HKP HK Parts
$24.95HK UMP Paddle Magazine Release - Enhanced This is a very common replacement part as they are fairly easy to break on the UMP lower. With this new mag release, you'll get a wider release as well as a much more durable part. Simple & easy to install no...HKP-18758$24.95 -
Kinetic Development Group HK USC Conversion to ACR Stock Upgrade - FDE
$459.95HK USC-UMP ACR Stock Adapter & ACR Stock Combo - Brown A new product that allows you to add the widely popular Remington ACR folding, adjustable stock to your USC-UMP conversion. Each unit comes complete with the ACR stock, hinge pin, sling mount and...HKP-19845$459.95 -
Trijicon RMR/SRO Low Picatinny Rail Mount
Trijicon
$94.95Trijicon Low Picatinny Rail Mount for RMR/SRO - RM33 Low Picatinny rail mount for RMR/SRO. Includes: Mount Optic mounting screws Distance From Top of Mounting Rail to Optical Axis: RMR: 0.768" SRO: 1.009" Slimline mounts, fits Picatinny railHKP-20335$94.95 -
H&K UMP/USC/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Hand Stop Complete
H&K Heckler & Koch
$68.95HK German Hand Stop Unit Complete This unit is compatible with any of the USC/UMP or the G36K or G36C handguards.HKP-00596$68.95 -
Kaw Valley Precision 9mm 3-Lug Suppressor Adapter - Threaded 5/8x24
Kaw Valley Precision
$36.95Kaw Valley Precision 9mm 3 Lug Suppressor Adapter - Threaded 5/8x24 The KVP 3-Lug adapters are manufactured to replicate the popular HK pattern 3-Lug interface. Concentricity of ID and OD surfaces are paramount in any suppressor attachment...HKP-19986$36.95 -
Strike Industries QD & Sling Hook Sling Attachement
Strike Industries
$28.95Ambush QD Sling Loop The Strike Industries Ambush low profile sling loop is the lowest profile sling loop designed for the MIL-STD-1913 rail. Made of solid steel, its unique locking bar design system allows for it to be lightweight and durable. Because...HKP-17381$28.95 -
H&K UMP (.40 S&W) 30 Round Magazine Spring
H&K Heckler & Koch
$8.95HK UMP .40 30 Round Magazine Spring Perfect for spares and to have on hand as these are consumable high-wear items. Compatible With: HK UMP .40HKP-02742$8.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Front Sight
H&K Heckler & Koch
$14.95New HK German Factory USC/UMP Front Sight This is a common wear or breakage part. This part is easy to swap out by just knocking out the roll pin, replacing it, and then re-inserting the roll pin. This is a common wear or breakage part. Compatible with...HKP-00254$14.95