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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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 -
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 with...HKP-22417$97.95 -
On Sale
HK UMP 3 Position Lower Grip Frame - Black - RARE - USED
HKP HK Parts
Now: $449.95Was: $699.95HK UMP 3 Position Lower Grip Frame - Black - RARE - USED ONLY 1 UNIT AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Used UMP Lower...HKP-99274Now: $449.95Was: $699.95 -
HK UMP 4 Prong Ported Flash Hider
HKP HK Parts
$49.95HKP HK UMP 4 Prong Ported Flash Hider 4-prong UMP ported flash hider designed for our new UMP 45 parts kit. Not only does it protect exposed threads, it also enhances the appearance of your firearm while delivering flash suppression. Compatible...HKP-21578$49.95 -
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 -
HK MP5, MP5K Stock and Dual Folding Adapter - Picatinny
Strike Industries
$199.95Strike Industries Dual Folding Stock This Strike Industries stock is ideal for MP5 or MP5K platforms featuring a 1913 Picatinny rail interface. Conveniently compatible with any platform featuring a Picatinny backplate. It offers quick, easy, and...HKP-21306$199.95 -
Out Of Stock
HK UMP, USC, G36, SL8 Sear, Complete
HKP HK Parts
$14.95HKP HK Parts Complete Sear for HK G36, HK UMP, HK USC, and HK SL8 Made in the USA Compatible With: UMP USC G36 SL8HKP-19555$14.95 -
Out Of Stock
HK UMP Birdcage Flash Hider
HDPS
$154.95HDPS HK UMP (.40 S&W/.45 ACP) Birdcage Flash Hider This part is made to fit all US-made or German HK-flanged style barrels. HK no longer makes a flash hider for the UMP Subgun. This is the much anticipated HDPS bird cage style UMP...HKP-02694$154.95 -
Out Of StockOn Sale
HK UMP Barrel - .40 S&W - Used
H&K Heckler & Koch
Now: $299.95Was: $499.95Heckler and Koch Ump Barrel made in Germany These are police department trade-in barrels in good shape and perfectly usable.HKP-00600Now: $299.95Was: $499.95 -
HK UMP, USC, SL8, G36 Fixed Rear Sight Flat Spring
H&K Heckler & Koch
$8.95HK Heckler and Koch Fixed Rear Sight Flat Spring or Leaf Spring for HK G36, HK SL8 and HK USC, HK UMP Compatible With: G36 SL8 USC UMPHKP-16635$8.95 -
On Sale
HK UMP Bolt Group - .40 S&W - Used
H&K Heckler & Koch
Now: $477.95Was: $649.95German UMP .40 factory F/A Bolt Group - Complete This item is used in very good shape.HKP-00601Now: $477.95Was: $649.95 -
On Sale
HK UMP, USC Optic Rail - Picatinny
H&K Heckler & Koch
Now: $12.95Was: $19.95HK UMP, USC Optic Rail - Picatinny Factory HK UMP and USC Picatinny machined aluminum optic rail with mounting hardware. Compatible With: HK UMP, USCHKP-22541Now: $12.95Was: $19.95