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 .45 ACP 5 Prong Flash Suppressor - Threaded 16x1
HDPS
$99.95HDPS .45 ACP 5 Prong Flash Suppressor - Threaded 16x1 LH The 5 Prong Flash Hider is designed to fit .45 ACP firearms threaded 16x1 LH This highly anticipated flash suppressor enhances accuracy by up to 35% and reduces recoil by up to 40%. With no...HKP-20459$99.95 -
HKP HK UMP Floor Plate - Black
HKP HK Parts
$9.95HKP HK UMP Floor Plate - Black Compatible With: UMP .45 UMP .40 UMP 9mm These 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 USC, HK UMP Cocking Handle Assembly
HKP HK Parts
$149.95HKP HK USC, HK UMP Cocking Handle Assembly Includes: Steel cocking handle Support spring Cocking lever support Set screwHKP-19155$149.95 -
Strike Industries 1913 Picatinny Backup Sights
Strike Industries
$84.95Strike Industries 1913 Picatinny Backup Sights Feautures: Built-in backup sights when flipped down for quick target acquisition Low-profile and low snag design Tool-less adjustments of windage and elevation Quick sliding dual aperture rear sight...HKP-21314$84.95 -
H&K UMP/USC/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Trigger
H&K Heckler & Koch
$19.95HK UMP, USC & G36 Trigger New HK German factory trigger. A great spare or replacement part. Compatible With: HK G36 HK UMP HK USCHKP-16495$19.95 -
H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Index Plate
H&K Heckler & Koch
$9.95HK Index Plate For All UMP, USC, G36, & SL8 Lowers Compatible With: HK UMP HK USC HK G36 HK SL8HKP-01860$9.95 -
H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Notched Disk - Safe/Semi
H&K Heckler & Koch
$14.95HK Ratched Wheel, Notched Disk G36, SL8 0,1 (Safe & Fire) Only Compatible With: 0,1 or S,F only: HK UMP HK USC HK G36 HK SL8HKP-16361$14.95 -
HK45 .45 ACP Thread Protector - Threaded .578x28 RH
USA
$24.95HK45 .45 ACP Thread Protector - Threaded .578x28 RH Made in the USA, HK45 .45 ACP thread protector, for full size & compact barrels with a 578x28 RH. A must have item to protect your threaded barrels, exposed threads, and your pistol. Made from...HKP-19891$24.95 -
HK UMP .45 Magazine Locking Plate
USA
$6.95HK UMP .45 Magazine Locking Plate Made in the USAHKP-20136$6.95 -
On Sale
B&T HK UMP (.40 S&W & .45 ACP) Birdcage Flash Hider - BLEMISHED
B&T Brugger & Thomet
Now: $76.95Was: $99.95B&T HK UMP (.40 S&W & .45 ACP) Birdcage Flash Hider - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. B&T muzzle brake/flash hider...HKP-16890-BNow: $76.95Was: $99.95 -
Bore Boss Pull-Through Bore Cleaner - .40/.41
Bore Boss
$10.95Real Avid Bore Boss Pull-Through Bore Cleaner - .40/.41 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-19411$10.95 -
$24.95 -
H&K HK UMP 30 Round .40 Magazine - LEO Marked
H&K Heckler & Koch
$64.9530 Round Magazine - LEO Marked - Used - UMP .40 S/W Each 30 round magazine will fit all HK UMP .40 caliber carbines, SMG's as well as the USC-UMP .40 caliber conversions. Used in good condition. The perfect option for those that like to collect LEO...HKP-20651$64.95 -
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. Compatible With: HK UMPHKP-01894$7.95 -
H&K UMP (.45 ACP) 25 Round Magazine - German LEO Markings - Used
H&K Heckler & Koch
$149.95German HK UMP .45 25 Round Magazine - Used Used PD trade in HK German UMP .45 cal 25 Round Factory Magazines. These magazines will fit all UMP factory firearms as well as the USC's that have been converted to accept UMP magazines. A perfect compliment...HKP-17917$149.95 -
Out Of Stock
H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Index Plate Compression Spring
H&K Heckler & Koch
$7.95H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Index Plate Compression SpringHKP-16496$7.95 -
HKP HK UMP & HK USC Extended Top Rail For Optics
HKP HK Parts
$59.95HKP HK UMP & HK USC Extended Top Rail For Optics Nearly an 1" longer than the standard length top rail for mounting any Picatinny mount optic. Made in the USA from 6061 aluminum and hard coat anodize in a beutiful black finish.HKP-21048$59.95 -
HKP HK UMP 45 (.45 ACP) 15 Round Magazine Spring
H&K Heckler & Koch
$9.95HKP HK UMP 45 15 Round Magazine Spring: UMP 45 (.45 ACP) 15 round magazine replacement spring. Perfect for spares as these are a consumable item that needs to be replaced from time to time.HKP-21297$9.95 -
Swiss Military Single Point Sling - OD Green - Used
$34.95Swiss Military Single Point Sling in OD Green - USEDHKP-19794$34.95 -
AIM M-LOK Quick Detach Sling Swivel Mount
AIM
$24.99M-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. Includes: All necessary mounting hardware and wrenches Features: High...HKP-18589$24.99 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Slide For Lower
H&K Heckler & Koch
$19.95HK USC & UMP Slide For Lower - German New HK German USC slide for conversion of UMP lower.HKP-00268$19.95 -
Aimpoint Lower 1/3 Co-Witness T1 Mount
AIM
$29.99Aimpoint - T1 Mount - Lower 1/3 Co-Witness Features a machined recoil lug for consistent, repeatable mounting. Features: 6061 T6 aluminum Black anodized Machined recoil lug Compatible With: Aimpoint T1 / H1 Series opticsHKP-19335$29.99 -
Out Of Stock
H&K USC/SL8 (.45 ACP/5.56/.223) Buttstock Screw
H&K Heckler & Koch
$12.95Buttstock Allen Screw For HK USC Or HK SL8 rifles. This is the screw that holds the stock assembly onto the upper receiver of the HK USC & SL8.Great for replacements or to have as spares. This item is factory HK and a common spare.HKP-01649$12.95 -
On Sale
Raddlock Key - HK Series
Raddlock
Now: $4.95Was: $9.95HK Series Raddlock Key And Lanyard Raddlock kits convert your firearm to a non-detachable magazine configuration for states with removable magazine restrictions. This is a replacement key for firearms equipped with a Raddlock device. Compatible With the...HKP-02447Now: $4.95Was: $9.95 -
Trijicon RMR/SRO 45° Rail Offset Adapter
USA
$91.45Trijicon RMR/SRO 45° Rail Offset Adapter Perfect for that situation where you need the versatility of a magnified optic paired with a Trijicon RMR or SRO red dot sight in close quarters. This offset rail adapter attaches to the firearm's picatinny...HKP-20336$91.45 -
H&K Trigger Pack Housing - Semi 0,1
H&K Heckler & Koch
$129.95H&K 2 Position (0,1) Semi-Auto Trigger Pack Housing This trigger pack housing is professionally converted to semi-auto with all legal and correct modifications, including a semi-sear hole and trigger stop. It is designed to provide reliable...HKP-02177$129.95 -
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 lowersHKP-16500$12.95 -
H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) 3 Position Selector Lever - Right
H&K Heckler & Koch
$19.95HK UMP & G36 Right Safety Selector Lever For All 3 Position Lowers OnlyHKP-01888$19.95 -
HDPS HK UMP/USC Birdcage Flash Hider For Threaded Barrels - Threaded 16x1 LH
HDPS
$137.95HDPS HK UMP/USC Birdcage Flash Hider For Threaded Barrels - Threaded 16x1 LH Designed for threaded barrels with a 16x1 LH thread, this flash suppressor is modeled after the HK UMP flash suppressor for flanged barrels. It’s perfect for those who...HKP-02579$137.95 -
Out Of Stock
HKP .45 ACP Titanium Thread Protector - Threaded 16x1 LH
HKP HK Parts
$19.95HKP .45 ACP Titanium Thread Protector - Threaded 16x1 LH This new style .45 ACP tactical thread protector fits all HK45 full-size and compact barrels with 16x1 LH threads. Essential for protecting your threaded barrels and exposed threads, it preserves...HKP-18004$19.95 -
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...HKP-02288$699.95 -
Out Of Stock
B&T Vertical Fixed Unigrip - Black
B&T Brugger & Thomet
$90.00B&T Vertical Fixed Unigrip - Black Swiss made B&T vertical for-end grip for picatinny. Made of aluminum Will fit all mil-spec picatinny rails. Measures long. Specifications: Condition: Factory new Color: Black Material: Polymer/alloyHKP-18043$90.00 -
H&K UMP (.40 S&W) 30 Round Magazine
H&K Heckler & Koch
$79.95HK German UMP .40 cal 30 Round Factory Magazine New factory fresh production HK magazine. Compatible With: HK UMP .40 HK USC-UMP conversions LWRC SMG.40HKP-00607$79.95 -
H&K USC (.45 ACP) Carbine Mag Release Axle
H&K Heckler & Koch
$18.95HK German USC Magazine Release Axle This is a great replacement as they are prone to breakage and wear. These are also a missing part in some states where bullet buttons are required. This part is compatible with all HK USC...HKP-02584$18.95 -
H&K USC (.45 ACP) Lower Locking Lever Axle
H&K Heckler & Koch
$8.95HK USC Lower Locking Lever Axle A great item to have on hand as spares. New German HK. Compatible With: All USC lowersHKP-16376$8.95 -
HKP HK UMP, HK USC, HK G36 Hand Stop Complete - Black
HKP HK Parts
$49.95Hand Stop Complete - USA - UMP, USC & G36 Compatible With: USC UMP G36K G36CHKP-19236$49.95 -
HKP HK USC Stock Block to Picatinny Rail
HKP HK Parts
$149.95HKP HK USC Stock Block to Picatinny Rail The HKP USC stock block with picatinny rail offers superior adjustability for the stock of your choice. Each stock block is crafted from billet aluminum, cerakoted for a robust finish, and includes the sling pin...HKP-21594-M$149.95 -
Strike Industries M-LOK & Key Mod Universal Rail - 7 Slots
Strike Industries
$25.95Strike Industries M-LOK & Key Mod Universal Rail - 7 Slots Strike Industries LINK attachment system takes the age old question Key-Mod vs. M-LOK and came up with the ultimate solution, a dual interface design compatible with both M-LOK and Key-Mod,...HKP-17594$25.95 -
On Sale
HK USC, UMP Receiver Optic Rail - BLEMISHED
USA
Now: $52.95Was: $95.00HK USC, UMP Receiver Optic Rail - BLEMISHED AFTERMARKET. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK USC, UMP top Receiver Rail with mounting hardware...HKP-19616-BNow: $52.95Was: $95.00 -
HKP HK UMP .45 ACP Barrel - Threaded 16x1 LH
HKP HK Parts
$369.95HKP HK UMP .45 ACP Barrel - Threaded 16x1 LH This new 16.5" threaded barrel is designed for UMP or Omega firearms, with precise 16x1 LH threading. Ideal for those looking to upgrade or replace their barrel. Specifications: Overall Length 16.5" Threaded...HKP-19395$369.95