Parts
At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.
Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.
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Out Of Stock
HK VP Series Trigger - Full Flat Face - Red
Lazy Wolf
$134.95Lazy Wolf VP Series F3 Full Flat Face Trigger - Red In a collaboration with Lazy Wolf Guns, HK Parts is offering aftermarket triggers for your HK VP9 & VP40 handguns. The drop in VP9 series trigger is the finest trigger ever developed after more than...HKP-18803$134.95 -
HKP Front Sight Blade
HKP HK Parts
$3.95HKP Front Sight Blade New US manufactured HK front sight blade. New US made. Compatible With: All HK front sight towers/triple frames.HKP-17551$3.95 -
HK45, HK45C, USPC Magazine Floorplate - .45 ACP - 10 Round
H&K Heckler & Koch
$14.95H&K 10 Round HK USPC/45C 45 Magazine Floorplate Each floor plate is the new style rubberized floorplate for enhanced life. A great spare part to have on hand for repair and replacement of parts. This floorplate is commonly called the "elephant foot"...HKP-02210$14.95 -
HK MP5SD Barrel Port Cleaning Brush
HKP HK Parts
$69.95HKP HK MP5SD 9mm Barrel Port Brush The HKP MP5SD barrel port brush can be rotated in either direction for stiffer or softer cleaning when using our proprietary handle. Compatible with any brush handle featuring the factory thread pitch. Compatible...HKP-20989$69.95 -
HK USP Optic Plate - Burris FastFire - Red Dot Pistol Mount
HKP HK Parts
$49.95HKP HK USP Red Dot Pistol Mount Red Dot mounting plate to allow the use of a Burris Fast Fire, Docter, Vortex Venom or other similar specs Red Dot Sights. Compatible With: HK Full Size - USP 9mm HK Full Size - USP .40 HK Full Size - USP .45 (Not...HKP-18898$49.95 -
HK G36, SL8 Rail - Bottom - 6 inch
HKP HK Parts
$27.95G36 & HK SL8 6" Bottom Rail Fits the SL8 and G36 full-size forearms. This item is just over 6" in overall length and is made from aircraft-grade aluminum. Comes with the screws needed for installation. From the center of the screw holes, there are...HKP-00285$27.95 -
HK Locking Washer - Rear Sights
HKP HK Parts
$2.95HKP Rear Sights Locking Washer HK German rear sights toothed locking washer used in perfect working order.HKP-00869$2.95 -
HK MP5 & PDW Rear Sight Drum
H&K Heckler & Koch
$53.95MP5 Rear Sight Drum- German This item is the factory-correct rear sight drum for the MP5K PDW or MP5K-N family of firearms. This item is also a popular upgrade for many of the existing clones on the market, as many use factory-incorrect G3 rear sight...HKP-00072$53.95 -
HK G36 (5.56/.223) 2 Position (0,1 Pictogram) Lower Housing
H&K Heckler & Koch
$549.95H&K G36 (5.56/.223) 2 Position (0,1 Pictogram) Lower Housing This lower housing is available without internals, a unique offering as G36 lowers previously only came as complete trigger groups with both grip and internals. Ideal for SL8 to G36...HKP-01504$549.95 -
Out Of Stock
HK MP5, MP5K Contact Piece for Paddle Mag Release - 9mm - US
HKP HK Parts
$15.95HK MP5, MP5K 9mm Contact Piece - USA Factory correct US manufactured MP5, MP5K 9mm Contact Piece for Paddle magazine release. Each part was made using the same material and manufacturing methods used on the German HK latest production parts. Hard to find...HKP-17403$15.95 -
Out Of Stock
HK MP5 Bolt Head - 9mm
RCM
$264.95RCM HK MP5-E 9mm Bolt Head Equipped with a heavier duty extractor and extractor spring, the RCM MP5-E bolt head is a drop-in upgrade for all MP5/MP5K's. Spend more time at the range, less time on the bench with this stout bolt head assembly. ...HKP-20954$264.95 -
M-LOK Rail Section - 3 Slots
Magpul
$18.95Magpul M-LOK 3 Slots Rail Section Designed for use with all M-LOK compatible hand guards and forends, M-LOK aluminum rail sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined...HKP-20495$18.95