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 UMP, G36 Sear Spring
H&K Heckler & Koch
$8.95HK UMP, USC, G36, & SL8 Sear Spring This part is used in conjunction with the sear in the trigger body of the lower.HKP-01866$8.95 -
HK91, G3 Wood Stock with Enhanced Buffer Installed
H&K Heckler & Koch
$229.95HK German G3, 91, PTR Wood Stock With- Enhanced DMR Buffer Installed Each stock includes: Metal Backplate With Recoil Spring Installed Modified by our HK gunsmith and an enhanced heavy buffer has been installed Heavy Buffer Assembly Complete Wood Stock...HKP-16697$229.95 -
MP5, SP5 - A2 Fixed Stock-Green
Michaels Machines
$199.95MP5 A2 Fixed Stock - USA - OD GREEN Each stock counts as one US made 922r compliant part. Simply the best US made MP5 stock featuring a rubberized backplate that reduces felt recoil as well as carrier abuse. Ideal for use with +P ammunition or MP5 40/10...HKP-18804$199.95 -
Cleaning Brush Rod
H&K Heckler & Koch
$19.95H&K Cleaning Rod For HK Cleaning Brushes HK chamber face brush, Receiver Brush, Flute Cleaning Brush Cleaning Rod For All US Threaded cleaning Brushes (8-32 thread type). This rod is an aluminum rod that is made to clean all HK rifles and machine...HKP-01821$19.95 -
HK MP5, MP5K, G36, HK33, HKK53, HK93, HK417 Magazine Release Bushing - Full Auto
MKE
$2.59MKE HK MP5/MP5K Magazine Release Bushing This part is for use in all 90-series H&K weapon systems and is used for installing a paddle mag release. This is not for use on semi-auto HK builds. This part is intended for full-auto conversions only...HKP-22283$2.59 -
HK21, HK11 Trunnion
RCM
$274.95RCM HK21 Trunnion When RCM set out to make a replacement trunnion for the venerable HK21, they started the process by putting a factory unit through rigorous destructive metal testing. The end-product: a US-made trunnion blending the proper...HKP-21609$274.95 -
HK MP5K, SP5K ACR Stock with Adapter
Magpul
$579.95HK SP5K ACR Stock Our aircraft-grade aluminum SP5K ACR adapter is now offered in this combo stock unit. Pre-installed and ready to drop in. With this SP5K ACR combo stock you will add the capability of an adjustable cheek rest and length of pull...HKP-20826-M$579.95 -
HK416 Ejection Port Axle
H&K Heckler & Koch
$4.95Ejection Port Axle - Steel- HK 416 New HK USA manufacture for the HK 416 family of firearms. This is the axle that holds the ejection port cover in place on the upper receiver.HKP-20039$4.95 -
HK MP5K 9mm SEF Navy Style Trigger Housing - Clipped & Pinned - USED
H&K Heckler & Koch
$99.95H&K MP5K 9mm SEF Navy Style Trigger Housing - Clipped & Pinned - USED In used but good condition. Each German HK housing will have some handling marks, nicks and dings. Each housing is in perfectly useable condition and each unit has been clipped...HKP-19850$99.95 -
HK45 Thread Protector - .578x28 RH
HKP HK Parts
$19.95HKP HK45 .45 ACP Thread Protector - Threaded .578x28 RH The US-made .45 ACP tactical thread protector fits all HK45 full size and compact barrels threaded .578x28 RH thread. A must have item to protect your threaded barrels and exposed threads. Our...HKP-19514-M$19.95 -
HK51, PTR PDW Stock - Fixed
PTR
$299.95HK91 and PTR PDW (7.62x39) & (7.62x51/.308) Fixed Stock Each stock is constructed of new U.S. & German HK parts. This stock also counts as one U.S. 922r compliant part. Perfect for those that have registered sears or want to SBR your PDW pistol...HKP-02408$299.95 -
Barrel Chamber Flute Cleaning Brush - 5.56 / .223
H&K Heckler & Koch
$29.95New HK German .223/5.56 Chamber Flute Cleaning Brush This item is ideal to have on hand for cleaning the flutes of the barrel. The flutes have to remain clean for the rounds to be extracted properly.HKP-00464$29.95