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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HK416, MR566, HK417 MR762 Buffer Retainer
HK HAUS
$9.95HK Haus Buffer Retainer for HK416, HK417 New HK USA manufacture for the HK416 and HK417 family of firearms. Made from stainless steel.HKP-20040$9.95 -
HK G36, SL8 Recoil Buffer - Factory - US
USA
$16.95HK G36 Or SL8 Factory Recoil Buffer A must have spare part as the buffer is prone to wear and breakage. Compatible With: All HK G36 models SL8 models ClonesHKP-18541$16.95 -
HK UMP, USC Recoil Buffer
H&K Heckler & Koch
$20.95HK German USC & UMP Recoil Buffer Replaceable spare lower housing or buffer for buffer housings. This is a high wear and replacement item and a must-have for spare parts. Compatible With: HK USC .45 HK UMP modelsHKP-00594$20.95 -
HK416, MR556 Buffer Tube Wrench
HKP HK Parts
$29.95HK MR556 & HK416 Buffer Tube Wrench The perfect metric wrench to remove and install the MR556 & HK 416 castle nuts on the buffer tube. A perfect addition to have on hand for OTB or other HK buffer tube upgrades, etc. Made from all steel, heat...HKP-17124$29.95 -
HK MP5K, SP5K Folding Stock - 10"
Zenith
$99.95Zenith HK MP5K, SP5K, SP89 Folding Stock Folds to the side for compact storage while providing a solid, stable shoulder stock when deployed. No modifications required on in-spec MP5K receivers. Specifications: Polymer and fiberglass reinforced Weight:...HKP-22419$99.95 -
HK MP5 Stock - KES
Safety Harbor Firearms
$279.95KES HK MP5 Stock The all-new KES is designed to fit the MP5 pattern pistols/rifles. Specifications: Guide rods slide into the existing slots present on the receiver Rods machined to go underneath the reinforcing piece welded onto the rear of the...HKP-21086$279.95 -
HK MP5, SP5 Replacement Parts Kit
HKP HK Parts / Heckler & Koch
$229.95HK / HKP MP5, SP5 Replacement Parts Kit This kit has the the most commonly worn parts needed to keep your precious MP5/MP5K going. Our German and U.S. spare parts kit has everything you will need to keep feeding rounds down range. Our spare parts kit...HKP-20919$229.95 -
HK416, MR556 Buffer Tube Castle Nut
H&K Heckler & Koch
$34.95Heckler and Koch Castle Nut for Buffer Tube for HK416 and HK MR556 New HK German manufacture. This buffer tube castle nut will fit both mil-spec and commercial buffer tubes. All steel manufacture. With HK round tool attachment points as well as...HKP-15230$34.95 -
HK91, G3 A2 Fixed Buttstock - Jungle Green - Used Excellent
H&K Heckler & Koch
$36.95HK Heckler and Koch Fixed Stock in Jungle Green - Used Excellent for HK91, G3 7.62x51/.308 Handpicked best condition available. Comes with matching buttpad. Ready to install on your HK or clone rifle. Used in perfect working condition. Each buttstock...HKP-18497$36.95 -
HK MP5K Binary Trigger Group – 2 Round Engraved Binary Housing
HKP HK Parts / FA Franklin Armory
$1,449.95 - $1,499.95Franklin Armory / HKP HK MP5K Binary Trigger Group – 2 Round Engraved Binary Housing Our latest and greatest binary trigger group was delivered with a factory HK German housing professionally engraved and painted with a 2-round burst pictograph to...HKP-21114-M$1,449.95 - $1,499.95 -
Out Of Stock
HK UMP, USC Ejector Lever
H&K Heckler & Koch
$39.95HK German UMP & USC Ejector Lever - German New HK German OEM part. Each unit fits all calibers of UMP & USC firearms. A great spare to have on hand as they are prone to shearing off with use and must be replaced. Compatible With: UMP .45 UMP ...HKP-00263$39.95 -
HK416, MR556, HK417, MR762 Micro Sights - Low Profile
Troy Industries
$199.95Troy Industries Low Profile Micro Sights For those that need a lower profile sight for enhanced cheek weld position and eye relief, this is the sight set up for you. Each rear sight includes two different sight apertures, making the sight system modular...HKP-01243$199.95