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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On Sale
HK UMP Barrel - 9mm - Threaded 1/2x28 with 3 Lug - US
HKP HK Parts
Now: $191.22Was: $299.95HKP HK UMP 9mm Barrel - Threaded 1/2x28 - 3-lug HKP UMP 3-lug 1/2x28 threaded barrel. This is the perfect replacement for a worn out barrel or as a spare. With the 3-lug attachment point you can...HKP-18639Now: $191.22Was: $299.95 -
HK MP5 Locking Roller +6 - .40 S&W
HKP HK Parts
$11.95HK US MP540 Locking Roller, +6 The proper roller size is essential for proper headspacing of bolt gap. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt...HKP-17565$11.95 -
HK MP5 Trunnion - .40 S&W, 10mm
HKP HK Parts
$139.95MP5 40 & MP5 10mm Trunnion Machined from ordnance-grade steel and heat-treated to factory specs. Each has the bullet guides pre-installed and included. These are the best USA-made trunnions on the...HKP-02737$139.95 -
HK MP5, HK94 Trigger Group - SEF Navy Semi Auto - Clipped and Pinned
H&K Heckler & Koch
$599.95HK Heckler and Koch German SEF Navy Style Semi-Auto Clipped and Pinned Trigger Group Complete for HK MP5 and HK94 Ready to drop on your semi-auto HK 9mm HK Or Clone firearm or upper receiver...HKP-01179$599.95 -
HK416, MR556 C.A.R.L. - 2, 3, or 6 Round Interchangeable Cam Limiter
ST Inc
$55.00ST Inc Limiter Cam for HK416, MR556 ARC-Fire CARL Lever - 2, 3, and 6 Round Options Limiter cam for the ST Inc CARL lever used with the HK416 and MR556 ARC-Fire trigger setup. Available in 2, 3, and...HKP-22565-M$55.00 -
On Sale
HK MP5K Folding Stock With Direct Fit Adapter
MI Midwest Industries
$267.72 - $419.95HK MP5K Folding Stock With Direct Fit Adapter The Midwest Industries Alpha folding stock paired with the HK Parts picatinny rail adapter offers unparalleled versatility. Adjust your length of pull,...HKP-21514-M$267.72 - $419.95 -
HK G36, SL8 Paddle Magazine Release - Heckler and Koch
H&K Heckler & Koch
$9.95Heckler and Koch Paddle Magazine Release for HK G36 and HK SL8 Compatible With: SL8 G36HKP-02152$9.95 -
HK MP5K Slimline Handguard
H&K Heckler & Koch
$49.95H&K HK MP5K Slimline Forearm Used German military slimline forearm refinished in a black cerakote . Cut down to fit the MP5k. These are rare items only offered here at HK Parts. Each item is in good...HKP-20275$49.95 -
HK417, MR762 Takedown Pin - Front - A1 Style
H&K Heckler & Koch
$59.95H&K HK MR762 Lower Receiver Front Takedown Pin - A1 Style This is the front (large) takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease...HKP-16602$59.95 -
HK417, MR762, G28 Receiver End Plate
H&K Heckler & Koch
$24.95H&K HK MR762/417/G28 Receiver End Plate New HK German factory. Compatible With: HK MR762 HK 417HKP-16610$24.95 -
HK G36 Optical Sight Rubber Cover
H&K Heckler & Koch
$10.95H&K HK G36 Rubber Optical Sight CoverHKP-16377$10.95 -
Out Of Stock
HK UMP, USC Extractor - .45 ACP
USA
$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,HKP-02623$39.95