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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HDPS HK UMP/USC (.45 ACP) Flanged Barrel - 8"
HDPS
$329.95HDPS HK UMP 45 ACP 8 Inch Barrel - Flanged HDPS UMP barrels are perfect for the USC to UMP conversions and for a replacement UMP .45 barrel. Each barrel is an exact reproduction with all HK German specs. As a bonus, this item counts...HKP-02130$329.95 -
H&K Universal Cleaning Kit
H&K Heckler & Koch
$21.95New - Original HK German MSG90/HK91/G3 Cleaning Kit - Old StockEach cleaning kit kit comes complete with brass brush, oil brush, oil tube, hand cleaning brush, and pull chain. Originally built for the G3,91 & MG3 but will work on all .308 - .351 ...HKP-19031$21.95 -
H&K Single Point Sling - Quick Detach - Tan
H&K Heckler & Koch
$29.95HK Single Point Sling in Tan - Quick DetachSpecifications: Composition: Thick, all black, heavy-duty Cordura nylon Style: Bungee-type design for positive retention and control Connection: HK sling hook attachment point with elastic cover Heavy duty 1.5?...HKP-19766$29.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Ejector Lever
H&K Heckler & Koch
$39.95HK German UMP/USC Ejector Lever - German New HK German OEM part. Each unit fits all calibers of UMP & USC firearms. A great spare to have on hand as they are prone to shearing off with use and must be replaced. Compatible with: UMP .45 UMP .40 UMP...HKP-00263$39.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Firing Pin Spring
H&K Heckler & Koch
$9.95New HK German USC & UMP 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 riflesHKP-00262$9.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Recoil Buffer
H&K Heckler & Koch
$20.95HK German USC & UMP Recoil Buffer Replaceable spare lower housing or buffer for buffer housings. This is a high wear and replacement item and a must-have for spare parts. Compatible with: HK USC .45 HK UMP modelsHKP-00594$20.95 -
Kinetic Development Group HK USC Conversion to ACR Stock Upgrade - FDE
$459.95HK USC-UMP ACR Stock Adapter & ACR Stock Combo - BrownA 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 -
SB Tactical HK UMP Omega / APC Folding Brace - Black
SB Tactical
$99.95SB tactical folding brace for the HK UMP, Omega UMP & B&T APC offerings. This is a brand new offering that was made for the new release of the Omega UMP pistol offerings now hitting the market. HK UMP .45, .40 & 9mm Omega GS offerings in 45,...HKP-18258$99.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Paddle Mag Release
H&K Heckler & Koch
$16.95UMP Paddle Magazine Release This is a common repair and replacement part as they are easy to break on the UMP lower. Simple and easy to install with no gunsmith needed or required. Compatible with: UMP .45 UMP .40 UMP 9mm Please note: This...HKP-00810$16.95 -
HK UMP/USC (.40 S&W/.45 ACP/9mm) Picatinney Rail Screw
$0.75HK USC/UMP Side Or Bottom Rail ScrewGood Spares To Have On Hand As Screws Can Get Damaged Or Lost.HKP-16562$0.75 -
HDPS HK USC (.45 ACP) Faux Sound Suppressor
HDPS
$180.99New second gen, latest production HDPS Faux Sound Suppressor for the HK USC (Kit includes the Faux Sound Suppressor, lower rail and screws) Realistic looks of the real Sound Suppressor available for the HK UMP. This integral one piece design is milled...HKP-02369$180.99 -
HKP HK UMP .45 ACP Magazine Block
HKP HK Parts
$9.95UMP mag block plug. This is designed to use on the HK UMP .45 25 Round Magazine.Very easy to install & use. fits all HK UMP .45 firearms 25 round magazines. USC-UMP .45 Conversions that use the UMP .45 magazine,LWRC SMG .45 Custom firearms &...HKP-18171$9.95 -
Magpul M-Lok 9 Slot Rail Section
Magpul
$22.95Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from milspec-anodized aluminum,...HKP-19570$22.95 -
HK UMP & G36 Pistol Grip Storage Insert
USA
$16.95G36 & 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, spare parts, etc. This item will fit all G36...HKP-20176$16.95 -
H&K German Leather Sling - Used-Very Good
H&K Heckler & Koch
$59.95Original Surplus German HK Leather 2 point sling - Used Very Good Comes with HK sling hook. Pulled from German military G3 rifles. Complete and in good shape overall. Made with leather straps and steel hardware and HK sling hook. Last of the...HKP-20345$59.95 -
H&K UMP (9mm) 30 Round Magazine
H&K Heckler & Koch
$89.95HK German UMP 9mm 30 Round Factory Magazine The latest HK German production 30-round magazine is new and hard to find. Compatible with: UMP 9mm USC 9mm conversions Omega 9mm UMP/USC buildsHKP-00608$89.95 -
Out Of Stock
HKP HK UMP 2 Position Lower Grip Frame - Black
HKP HK Parts
$179.95UMP - 2 Position Lower Grip FrameNew UMP Lower. 2 position settings (S,F). Perfect for all your own internals. This item is ideal for the USC to UMP conversion or to keep as a spare. Each lower fits & works with the 45, 40 & 9mm calibers using...HKP-19382$179.95 -
H&K HK UMP, HK USC Lower Axle
H&K Heckler & Koch
$9.95HK UMP & USC Lower Axle Pin - US3 lower axle pins are used for each trigger group or lower all the same size with the exception of the mag release axle on the USC.HKP-19383$9.95 -
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 Leather Sling - Used
H&K Heckler & Koch
$49.95Original Surplus German HK Leather 2 point sling Comes with HK sling hook. Pulled from German military G3 rifles. Complete and in excellent shape overall. Made with leather straps and steel hardware and HK sling hook. Can be used on many...HKP-16316$49.95 -
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 -
HK MP5, 94 UMP Style Folding Stock With HK Parts Stock Adapter
USA
$249.95New 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 Attachment Points. Properly buffered with factory correct...HKP-20215$249.95 -
Strike Industries M-LOK Bikini Hand Stop
Strike Industries
$13.95Bikini Hand Stop (2-pack) Strike IndustriesThe Strike Industries Bikini Hand Stop (BHS) gives the shooter increased ergonomics and control of the weapon. The hand stop is made from durable and lightweight polymer compatible with M-LOK rails. The BHS is...HKP-20057$13.95 -
Bore Boss Pull-Through Bore Cleaner - .44/.45
Bore Boss
$10.95Real Avid Bore Boss Pull-Through Bore Cleaner - .44/.45From 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 -
HK German Leather Sling
H&K Heckler & Koch
$99.95German HK Leather 2 point sling - New Comes with HK sling hook. Complete and new condition. Made with leather straps and steel hardware and HK sling hook. Can be used on many firearms: HK91, G3, PTR91 & CETMEHK93, 33, 53HK94, MP5HK clones or other...HKP-20485$99.95 -
HKP HK UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Sear
HKP HK Parts
$49.95Sear For The HK UMP, USC, G36, & SL8 - USA CNC machined from aircraft grade aluminum that is hard coat anodized that will last much longer than the factory HK part that's made with plastic. This part counts as 1 US-made...HKP-01847$49.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Lower Locking Pin
H&K Heckler & Koch
$36.95HK German UMP Lower Locking Pin For use with all HK UMP lowers and USC to UMP conversions. New HK German manufacture.HKP-00595$36.95 -
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 -
HKP - HK UMP, USC - Flat Trigger
HKP HK Parts
$99.95HKP - HK UMP, USC, - Flat Trigger With our new Flat trigger you will improve the aesthetics of your firearm and will also give shooters a lower position on the trigger, which will increase leverage for a smoother, more consistent pull. Our flat...HKP-20766$99.95 -
HKP 2 Point Leather Sling - Brown
HKP HK Parts
$49.952 Point Leather Sling - Brown These new HK Parts 2-point slings are based off of the original German HK Design that are no longer offered. This is a 1st time offering, handcrafted by a German Artisan and made 100% in the USA. Made from quality USA...HKP-20162$49.95 -
Magpul M-Lok 7 Slot Rail Section
Magpul
$21.95Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from milspec-anodized aluminum,...HKP-19569$21.95 -
H&K UMP (.40 S&W) 30 Round Magazine Spring
H&K Heckler & Koch
$8.95HK UMP .40 Magazine Spring Magazine Spring For HK UMP 30 Round .40 Cal Magazine. Perfect for spares and to have on hand as these are consumable high wear item. HK UMP .40 30 round magHKP-02742$8.95 -
Out Of Stock
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Factory German Sling
H&K Heckler & Koch
$0.00HK USC, UMP Factory German Tactical Sling -BlackHKP-00613$0.00 -
H&K UMP/USC (.45 ACP) Extractor
H&K Heckler & Koch
$49.95New USC & UMP .45 Extractor - German Compatible with both the USC & UMP. Perfect for spares as they are prone to breakage and are a common wear item. Please note: HK considers this a high wear and replacement item. Once it is removed from the...HKP-00265$49.95 -
HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin-Thumb Screw Style
HDPS
$74.95Stock Block B Sling Pin With Thumb Screw. The original thumb screw version for all stock block B's.HKP-15731$74.95 -
Magpul M-Lok QD Sling Mount
Magpul
$27.95The 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 edges to reduce snagging and...HKP-17268$27.95 -
Out Of Stock
AIM M-LOK Quick Detach Sling Swivel Mount
AIM
$19.95M-LOK Quick Detach Sling Swivel Mount The Aim M-LOK® QD Sling Mount stud with QD swivel provides a front attachment point for your push button QD sling or sling with just strap. Features: Compatible with all M-LOK spec attachment points. High grade...HKP-18589$19.95 -
HKP HK UMP Floor Plate - Black
HKP HK Parts
$9.95Fits all HK UMP Magazines: UMP .45 UMP .40 UMP 9mmThese can become cracked or broken with use or drops onto hard surfaces.Made in the USA and counts as 1 US compliant part.HKP-17161$9.95 -
HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) QD Sling Pin for Stock Block B
HKP HK Parts
$74.95Quick Detach Sling Pin for Stock Block B - USC, UMPThis Ambidextrous QD Sling Pin allows you to replace your Push Pin Style or Eyelet Sling Loop -Â Style Pin in your Stock Block B for use of a QD Sling.HKP-18776$74.95 -
Magpul MS3 Sling - Gen 2 - Black
Magpul
$49.95Magpul MS3 Sling - Gen 2 - Black Magpul Industries MS3- Multi Mission Sling System Sling Black AR Rifles 1 or 2 Point SlingHKP-13727$49.95