HK UMP/USC Series

USA HK UMP/USC .45 Semi Auto Bolt Carrier - Complete 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...

Front Sight Roll Pin - HK UMP, USC, G36, & SL8    

HK UMP 9mm magazine - FDEUMP 30 round magazine for the UMP. Each magazine features enhanced steel feed lips, and a 30 round magazine capacity. Each magazine counts as 3 U.S. Made compliant parts as an added bonus! This is the finest magazine offering...

The SBT-G2 Pistol Stabilizing Brace is 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 with all of the...

H&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.

New 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...

 Cleaning 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...

HK German Hand Stop Unit Complete  This unit is compatible with any of the USC/UMP or the G36K or G36C handguards.  

HK Index Plate For All UMP, USC, G36, & SL8 Lowers Compatible with: HK UMP HK USC HK G36 HK SL8

Real Avid Bore Boss Pull-Through Bore Cleaner - .357/9mm/.38From 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...

HK German Sling Hardware New Old StockSlider and sling tension adjuster for HK style slings and other sling applications. Steel manufacture. 

HK UMP Catch Release Lever Or Trip Lever For All UMP Lowers  

New HK German USC/UMP 9mm Extractor This is the perfect spare part to have for your UMP or USC 9mm conversion. Hard to find and only available here at HKPARTS.

HK 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...

5 Prong .45 Cal Flash Hider - HDPS 5 prong flash hider made to fit UMP, HK45, USP 45 or other barrels threaded 16 X 1 LH. This is the much anticipated 5 prong flash hider. 5 Prong Flash Suppressor for HK USP .45 ACP pistols and also works on UMP / USC...

Single Point Leather Sling - Black Our leather sling utilizes two HK style sling hooks to attach to a single mounting point. Designed to replicate the original, out of production, German HK offering. Each sling is handcrafted in the US by a German...

HK single point bungee sling for use on all HK & other firearm applications. This super high quality sling is a must have for those that prefer operating with a single point sling over the more traditional 3 point HK sling.HK Single Point Sling...

B&T Sling Swivel - Universal Picatinny Attachment   Designed for H&K snaphooks, mounts to any M1913 Picatinny Rail. Strong non maring silent attachment point. Specifications: Color: Black Height max: 16.3 mm Length max: 12 mm Length of...

HK Cable Gun Lock Same lock that ships with factory HK firearms.

HK UMP .45 Magazine Locking Plate - USA

G36 & HK UMP Hammer For Lower Or Trigger Group- US Made US made hammer for 922R compliance. These hammers are a direct fit on the USC and SL8 platform and count as one of the needed 922r compliant parts for the SL8 and/or USC.

HK UMP Release Lever Spring For All UMP Lowers  

HK UMP, USC, G36, & SL8 Sear Spring This part is used in conjunction with the sear in the trigger body of the lower.  

H&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...

H&K USC/SL8 (.45 ACP/5.56/.223) Left Selector Lever HK German USC, SL8 left side selector lever 2 position 0,1 Safe, Semi only. Compatible With: HK SL8 HK USC

  A skeletonized version of the SBT Pistol Stabilizing Brace, the SBTi enhances your B&T APC or HK UMP with an integral, side-folding mechanism. The SBTi variant also allows you to customize the look of your platform equipped with any compatible...

HK G36 & UMP Buttstock Push ButtonThis is a factory HK German replacement button for the HK G36 and HK UMP stock.

HK UMP & USC Cocking Handle Pin Compatible with: HK UMP HK USC

New HK German Factory 10 Round USC .45 Magazine Spring That Will Fit All HK USC Factory 10 Round Mags.Fits All HK USC 10 Round magazines.

HK UMP, USC Bench Mat, Gunsmithing MatOur HK USC & UMP bench mat is the perfect cleaning & repair mat designed specifically for your Heckler & Koch models. Have fun and learn while you work on your favorite H&K firearm. The soft top...

New HK UMP .45 - 25 Round Magazine Body Only New HK German 25 round factory magazine body. A great spare part in the event that your mag body is damaged or cracked.

H&K MP5 40/10 Field Cleaning Kit   Includes: Saf-T-Clad Cleaning Rod Accessory Adapter Section #8-32 Patch Holder Chamber Face Brush (Made in the USA) Barrel Flute Brush Phosphor Bronze Bore Brush Double-Ended Utility Brush Formula 3 Gun...

HK German USC, UMP Bolt Catch Pin

HK UMP, USC 45 ACP 8″ Threaded Barrel HDPS UMP barrels are perfect for the USC to UMP conversions and for a replacement UMP .45 barrel. They are considered by many to be the finest US-made barrel available. This barrel is the same length as a...

HKP - HK UMP, USC, - Curved Trigger With our new curved trigger you will improve the aesthetics of your firearm. Our curved trigger has spaced out serrations at the face of the trigger for a far superior grip. Each trigger counts as one US made...

30 Round Magazine – Used – UMP .40 S/W This magazine will fit all HK UMP .40 Caliber UMP’s as well as the USC-UMP .40 caliber conversions. Used factory HK magazine. Fits: HK UMP .40 HK USC-UMP conversions LWRC SMG.40

HK 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.40

HK UMP .45 Magazine Follower - USANew UMP .45 magazine follower for all HK UMP .45 magazines. Fits all UMP 45 magazines both US or German

HK UMP, USC Right Side Hammer Spring For Lowers - USA

HK UMP, Omega .40 Cal - 3 -Lug & Threaded Barrel - 9/16 X 24New USA made .40 cal 8" barrel for the UMP or Omega firearms. Each barrel is threaded 9/16 X 24 and 3 lug tipped. The finest barrel for the UMP .40 barrel on the market.