HK Rifle / SMG Parts
Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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Out Of Stock
HK G36K Piston Rod Assembly, Complete
GSG9
$59.95GSG9 USA Made Complete Gas Piston Rod and Spring Assembly for HK G36K New spring assembly that is a must have for spare parts or to use on that HK SL8-G36 conversion. This is the proper length gas...HKP-18249$59.95 -
Out Of Stock
Flash Hider - Threaded 15x1 RH - 5.56 / .223
H&K Heckler & Koch
$0.00Heckler and Koch's Factory Correct Flash Hider - Threaded 15x1 RH Fits all HK barrels. 15x1 The right-hand thread is the thread pitch. Perfect for the SL8 and G36 type conversions. Specifications:HKP-00952$0.00 -
Out Of Stock
HK G36 Lower Housing - 4 Position Burst Navy
H&K Heckler & Koch
$0.00H&K G36 (5.56/.223) 4 Position Burst Navy Style Lower Housing This lower housing, featuring the Navy style housing, is offered without internals. Previously, G36 lowers were only available as...HKP-02231$0.00 -
Out Of Stock
HK G36, SL8 Single Optic Carrying Handle - Used
H&K Heckler & Koch
$0.00HK German G36, SL8 Single Optic Carrying Handle In Used Shape.HKP-00806$0.00 -
Out Of Stock
HK USC Magazine Release - Extended
HKP HK Parts
$24.95HKP HK Parts Alloy Extended Magazine Release for HK USC Billeted alloy USC magazine release. This is a very common repair and replacement part as they are fairly easy to break on the USC lower. With...HKP-17918$24.95 -
Out Of Stock
HK UMP, USC Extractor - .40 S&W
USA
$39.95New US-Made USC Or UMP .40 Extractor This part is a repair and replacement item, as these are prone to breakage, and it's a part that's hard to find and a great item to have on hand. Please Note: HK...HKP-02624$39.95 -
Out Of Stock
HK UMP Pistol Grip, Incomplete - 0,1,2,F
H&K Heckler & Koch
$0.00Stripped UMP Pistol Grip - 4 Position (0,1,2,D) PictogramHKP-17817$0.00 -
Out Of Stock
HK UMP Pistol Grip, Incomplete - 0,1,F
H&K Heckler & Koch
$0.00UMP Pistol Grip Stripped & Incomplete - 3 Position (0,1,F) Pictogram New German HK UMP 3 position lower.HKP-17816$0.00 -
Out Of Stock
HK UMP Pistol Grip, Incomplete - 0,1
H&K Heckler & Koch
$0.00UMP Pistol Grip Stripped & Incomplete - 2 Position (0,1) Pictogram New HK German manufacture, rare and hard to find. If you have an HK USC you can use this housing with the USC lower internals for a...HKP-17815$0.00 -
Out Of Stock
HK UMP Rear Receiver Section - Demilled
H&K Heckler & Koch
$0.00HK UMP Demilled Receiver Section This is a demilled factory HK UMP rear receiver section that is perfect for the new Tom Bostic USC-UMP conversions. This section is the perfect length in order to do...HKP-01659$0.00 -
Out Of Stock
HK UMP Parts Kit - 9mm
H&K Heckler & Koch
$0.00HK Heckler and Koch 9mm Parts Kit in Like New Condition for HK UMP Click this link to complete your build with an S5 Tactical receiver. Black OHKP-02425$0.00 -
Out Of Stock
HK UMP, USC Kit - Caliber Conversion - 9mm - 30 Round
HKP HK Parts
$999.95HK Parts and Heckler and Koch HK UMP and HK USC 9mm Conversion Kit - Threaded Barrel 1/2x28 - 3-Lug This UMP, USC conversion kit will convert existing conversions to 9mm. This is a simple drop-in...HKP-02285$999.95