UMP / USC Small Parts
Explore our selection of HK UMP and HK USC small parts, perfect for repairs, upgrades, and custom builds. Our inventory includes precision-machined replacement components, push pins, springs, and maintenance parts designed for proper fit, durability, and reliable performance.
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HK UMP, USC Firing Pin Assembly - Complete
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 -
HK UMP, USC Stock Block B Sling Pin - Thumb Screw Style
HDPS
$74.95HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin-Thumb Screw Style The original thumb screw version for all stock block B's.HKP-15731$74.95 -
HK UMP, USC Sling Pin, Stock Block B - QD
HKP HK Parts
$74.95Quick Detach Sling Pin for Stock Block B - USC, UMP This Ambidextrous QD Sling Pin allows you to replace your Push Pin Style or Eyelet Sling Loop - Style Pin in your Stock Block B for use of a QD Sling.HKP-18776$74.95