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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HK SP5 ACR Stock or Brace Adapter
HKP HK Parts
$139.95HKP HK SP5 ACR Stock or Brace Adapter This adapter allows the ACR stock to be fully compatible with the SP5 and in-spec MP5 platforms. It’s built from aircraft-grade aluminum with a pre-installed buffer for a straightforward, drop-in conversion...HKP-21519$139.95 -
HK MP5 Stock - Cheek Riser
HKP HK Parts / Strike Industries
$349.95Strike Industries HK MP5 Stock with Cheek Riser The Strike Industries Dual Folding Stock paired with the HKP MP5 picatinny adapter is one of the best options on the market for those looking for a light, compact folding stock configuration. The adjustable...HKP-21497-M$349.95 -
HK G36 Backplate Complete with Recoil Assembly
H&K Heckler & Koch
$199.95HK G36 Backplate Complete With Recoil Assembly New HK German G36 Backplate with new G36/SL8 recoil buffer and recoil assembly. This assembly does include the recoil rod retaining screw. This is a great spare or replacement to have on hand. These are also...HKP-16735$199.95 -
HK MP5 Lower Receiver - Section
H&K Heckler & Koch
$54.95HK MP5 Rear Receiver Section HK German demilled receiver section with rear sight base as installed at the factory. The rear push pin section is still attached to the demilled receiver section.HKP-02147$54.95 -
HK SP5 Spec Only 9mm SEF Navy Style Trigger Housing - Clipped & Pinned - USED
H&K Heckler & Koch
$89.95H&K SP5 Spec Only 9mm SEF Navy Style Trigger Housing - Clipped & Pinned - USED In used but good condition. It will have some nicks but overall this house is in good working condition. For use with SEF style trigger packs. This will not work with...HKP-19488$89.95 -
HK417, MR762 Magazine Catch Retainer Ring
H&K Heckler & Koch
$10.95H&K HK 417/MR762 Magazine Catch Retainer Ring Compatible With: HK 417 HK MR762HKP-16521$10.95 -
HK416, MR556, HK417, MR762, G28 Pistol Grip - PSG1 Sniper Style - RAL8000
H&K Heckler & Koch
$129.95H&K HK MR556/MR762/416/417/G28 Sniper PSG1 Style Grip - RAL 8000 HK German PSG1 style sniper factory. Each grip will fit all AR-15/M-16 lower receivers as well. Superior fit & feel to any other grip on the market. HK has hit a home run with their...HKP-17693$129.95 -
HK416, MR556 Handguard Front Folding Sight - Brown
H&K Heckler & Koch
$599.99H&K MR556/416 9" Quad Rail With Flip Up Front Sight - Brown Latest production HK 416A5, MR556 9" quad rail with integrated built-in front flip up sight. Latest upgraded design with the laser markings for the adjustable gas block for suppressed and...HKP-17680$599.99 -
HK416 Gas Block for 10.4" Barrels
H&K Heckler & Koch
$279.95HK German 10.4" Barrel Non-Vented Gas Block Complete Factory HK NON-VENTED 10.4" gas block. Compatible With: HK 416 10.4" uppers HK MR556 to 10.4" conversionsHKP-01543$279.95 -
HK USC, SL8 Sight Support Spring
H&K Heckler & Koch
$9.95H&K USC/SL8 (.45 ACP/5.56/.223) Rear Sight SpringHKP-16516$9.95 -
HK UMP Magazine - .40 S&W - 15 Round
HKP HK Parts
$49.95UMP, SMG .40 Cal 15 Round Magazine - US Each ultra compact 15 round magazine will fit all HK UMP .40 caliber carbines, SMG's as well as the USC-UMP .40 caliberP conversions. Each magazine features, steel feed lips, enhanced polymer construction and all...HKP-17584$49.95 -
HK91, G3 Complete Tungsten Full Auto Bolt Group
HKP HK Parts
$549.95HKP HK 91/G3 (7.62x51/.308) Complete Tungsten Full Auto Bolt Group US Made HK 91/G3 Full Auto Bolt Group Complete - NEW Each bolt group is built using HK factory prints, specs here in the US. As an added bonus each bolt group counts as two US parts for...HKP-16249$549.95