UMP / USC Bolt Carrier Groups
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On Sale
HK UMP, USC Firing Pin - Complete Assembly - .40 S&W / .45 ACP / 9mm
H&K Heckler & Koch
Now: $74.66Was: $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'sNow: $74.66Was: $82.95 -
On Sale
HK UMP/USC (.40 S&W/.45 ACP/9mm) Complete Recoil Rod Assembly
H&K Heckler & Koch
Now: $71.95Was: $79.95HK USC/UMP 45/40/9mm Recoil Spring/Rod Assembly New HK German. This is great to have as a spare as this is a repair and replacement item. Compatible With: HK UMP 45 HK USC 45 HK UMP 40 HK UMP 9mmNow: $71.95Was: $79.95 -
On Sale
HK UMP, USC Firing Pin Spring
H&K Heckler & Koch
Now: $8.96Was: $9.95H&K UMP/USC (.40 S&W/.45 ACP/9mm) Firing Pin Spring This is a common wear and breakage item. This item also frequently becomes lost by end users when field stripping the UMP and USC Bolts. Compatible with: All HK UMP & USC FirearmsNow: $8.96Was: $9.95 -
On Sale
HK UMP, USC Extractor - .45 ACP
H&K Heckler & Koch
Now: $44.96Was: $49.95New USC & UMP .45 Extractor - German Compatible with both the USC & UMP. Perfect for spares as they are prone to breakage and are a common wear item. Please Note: HK considers this a high wear and replacement item. Once it is removed from the...Now: $44.96Was: $49.95 -
On Sale
HK UMP, USC 9mm / .40 S&W / .45 ACP Complete Recoil Rod Assembly
HKP HK Parts
Now: $47.96Was: $59.95HK USC, UMP 45/40/9mm Recoil Spring/Rod Assembly New USA made recoil assembly complete. Our design allows for easy repair and replacement of the recoil spring itself without replacing the entire recoil assembly as found on the German recoil assemblies...Now: $47.96Was: $59.95 -
On Sale
HK UMP, USC Lower Locking Pin
H&K Heckler & Koch
Now: $33.26Was: $36.95HK German UMP Lower Locking Pin For use with all HK UMP lowers and USC to UMP conversions. New HK German manufacture.Now: $33.26Was: $36.95 -
On Sale
HK UMP Extractor - 9mm
H&K Heckler & Koch
Now: $54.86Was: $60.95New 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.Now: $54.86Was: $60.95 -
On Sale
HK UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin
H&K Heckler & Koch
Now: $5.36Was: $5.95H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch PinNow: $5.36Was: $5.95 -
On Sale
HK USC/UMP (.40 S&W) Extractor
H&K Heckler & Koch
Now: $49.46Was: $54.95HK 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...Now: $49.46Was: $54.95 -
On Sale
HK UMP/USC (.45 ACP) Extractor
Now: $35.96Was: $39.95HK UMP & USC .45 Extractor Perfect for spares as they are prone to breakage and are a common wear item. Please Note: HK considers this a high wear and replacement item. Once removed from the carrier, the spring tension is compromised,...Now: $35.96Was: $39.95 -
On Sale
HK UMP Firing Pin Retainer Pin - .40 S&W / .45 ACP / 9mm
H&K Heckler & Koch
Now: $7.16Was: $7.95HK UMP Firing Pin - Retainter Pin This is the pin that trips the trip lever on the UMP lower. Compatible With: HK UMPNow: $7.16Was: $7.95 -
Out Of StockOn Sale
HK UMP, USC Lower Bolt Catch
HKP HK Parts
Now: $18.36Was: $22.95HK UMP & USC Bolt Catch For Last Round Hold Open New HK USA lower bolt catch. Compatible With: HK UMP HK USCNow: $18.36Was: $22.95