UMP / USC Series

HK UMP & USC Right Side Hammer Spring For Lowers

H&K VTAC-MK2 Sling - Coyote Tan - Two Point Sling The Viking Tactics Padded Sling features a closed cell foam shoulder strap and durable resin treated nylon. Its quick adjust design allows fast length changes from any position. The friction resistant...

Aimpoint Micro TL with B&T Universal Picatinny Mount - 4 MOA 4 MOA Aimpoint Micro TL and B&T Picatinny QD mount combo.  B&T's precise QD mount ensure a repeatable zero when re-mounting this compact package.

HKP HK UMP Extended Top Rail - Red Nearly an 1" longer than the standard length top rail. This picatinny top rail allows the user to add an eotech, aimpoint, acog, etc. Made in the USA from aluminum material and hard coat anodize in a beutiful Red...

HK German Factory 5 Round USC .45 Magazine This is the only magazine that HK offers for the HK USC unless you want to upgrade to the USC-UMP style of conversions. Compatible With: All HK USC carbines

HK 416/MP5 Sling Swivel Sling swivel for the Walther 416 and MP5 .22 rifles. This will attach to the quad rail on the 416 to give you an attachment point for a 2 point sling. May also be used with the an MP5 that has a tri rail set up.

GSG9 UMP (9mm) Barrel - Threaded 1/2x28 - 3-Lug This barrel is the perfect addition to your UMP conversion as it includes the 3-lug and threaded 1/2x28 end of the barrel for use with suppressors or factory HK 3-lug flash hiders. Specifications: Threaded...

H&K Heckler & Koch's HK UMP and HK USC Housing - Lower - Navy Grip - 40 S&W / .45 ACP / 9mm - USED  Priced for ONE Navy Lower Housing ONLY - Each unit Sold INDIVIDUALLY ONLY 4 UNITS AVAILABLE - Condition Varies by Unit Genuine H&K...

Rare Surplus 30 Round Magazine - LEO Marked - Windowless - UMP .40 S/W Rare UMP .40 windowless magazine with LEO markings. Highly unique magazines as these were "early production" magazines that were used before they switched over to the windowed UMP...

H&K UMP/USC/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Hand Stop Filler Piece HK German Hand Stop filler piece for UMP and G36.

HK G36 & UMP Slide For 3 Position Burst Only Lowers - 0,1,2 Only  Compatible With: HK UMP HK G36    

Midwest 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...