HK UMP/USC Small Parts

M-LOK? MVG® VERTICAL GRIP M-LOK SLOT SYSTEMThe M-LOK MVG is a light weight, inexpensive vertical foregrip that attaches directly to M-LOK compatible hand guards and forends with no additional Picatinny rails required. Made from the same high quality...

Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from milspec-anodized aluminum,...

Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from milspec-anodized aluminum,...

Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from milspec-anodized aluminum,...

Bikini Hand Stop (2-pack) Strike IndustriesThe Strike Industries Bikini Hand Stop (BHS) gives the shooter increased ergonomics and control of the weapon. The hand stop is made from durable and lightweight polymer compatible with M-LOK rails. The BHS is...

UMP, USC, SL8, & G36 Ambidextrous Sling Loop Or Eyebolt For Sling - German HK The addition of the HK eyelet creates a sling attachment point that will enable you to mount a sling using any of the hard mounting points located on the forearm of the...

Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from milspec-anodized aluminum,...

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.  

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, same hardware with no need for additional parts. This Aluminum...

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, same hardware with no need for additional parts. This Aluminum...

HK G36, SL8, USC, & UMP Compression Spring For Index Plate - Lower  

HK UMP, USC - Left Side Hammer Spring For All Lowers New U.S hammer spring- Left Side A high wear item that needs to be changed when light firing pin strikes develop on your USC or UMP firearm. Fits all:  HK UMP models 45, .40 & 9mm USC .45 and...

Includes Cocking Handle Support Spring Cocking Lever Support Roll Pin for Cocking Handle

Stock Block B Sling Pin With Loop washer & Quick Pull Pin for UMP/USC (.40 S&W/ .45 ACP/9mm)   

HK USC Alloy Mag Release - ExtendedBilleted alloy USC magazine release. This is a very common repair & replacement part as they are fairly easy to break on the USC lower. With this new metal mag release you get more surface area as well as a much...