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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HK MP5K, SP5K Binary Trigger Group - SEF Ambi - BFSIII - 9mm - Contoured
FA Franklin Armory
$1,499.95 - $1,549.95Franklin Armory HK MP5K - BFSIII HK-C1 – Binary Trigger Group – SEF – Contoured In position 3 it will fire 1 round on pull and 1 round on release. With a 4.5 lb trigger pull, making this the fastest semi-automatic trigger on the market...HKP-20005-M$1,499.95 - $1,549.95 -
HK93 Trunnion
RCM
$65.00RCM HK93 Trunnion Made to exact factory HK specifications for the HK93, HK33 type builds. These are the best trunnions of their kind on the market. Machined to HK spec making the install painless and hassle free. The way a custom HK build it should...HKP-20807$65.00 -
HK MP5K, SP5K, SP89 Leather Sling - Single Point - Dark Brown
HKP HK Parts
$49.95Single Point Leather Sling - Dark Brown Our leather sling utilizes two HK style sling hooks to attach to a single mounting point. Designed to replicate the original, out of production, German HK offering. Each sling is handcrafted in the US by a German...HKP-20270$49.95 -
On Sale
HK MP5 QD End Cap with Buffer
HKP HK Parts
Now: $63.95Was: $99.95Quick Detach Steel End Cap With Replaceable Rubber Buffer - HK MP5 With this MP5 QD end cap upgrade you will get a heavier buffer to internally protect your firearm and keep your bolt carrier in tip top condition for years to come. Machined aircraft...HKP-20118Now: $63.95Was: $99.95 -
HK VP9, VP40 Grip Panel Right Side - Small
H&K Heckler & Koch
$18.95H&K VP9, VP40 Grip Panel Right Side - Small - Black New HK German manufactured. Left side, medium size perfect for spare or for custom stippling projects. Drop-in part for your HK VP Pistol. Compatible With: HK VP9 HK VP9A1 F, VP9A1 K HK VP40HKP-16811$18.95 -
HK45, HK45 Compact V2 Right Side LH Lever
H&K Heckler & Koch
$31.95HK 45 & 45C V2 Right Side LH Lever This is the control lever for left-hand shooters. This would be the lever on the right side of the frame for left-hand shooters. The V2 left lever will allow for both the safety...HKP-02416$31.95 -
Out Of Stock
HK MP5, MP5K Magazine Block Plug - 10 to 30 Round Conversion - 10mm / .40 S&W
HKP HK Parts
$9.95HKP 10 Round MP5 40/10 Magazine Block MP5 10/30 mag block plug. This is designed to use on the HK MP5 40/10 30 round magazine. Very easy to install & use. Compatible With: MP5 .40, MP5 10mm Clones or other custom buildsHKP-18170$9.95 -
Out Of Stock
HK416, MR556, MR762 Fire Control Detent Stop Pin
H&K Heckler & Koch
$20.95H&K HK MR556/MR762/416 Fire Control Detent Stop Pin HK German manufacture. Compatible With: HK MR556 HK416 HK MR762HKP-15272$20.95 -
HK416, MR556 Magazine - 30 Round - RAL8000
H&K Heckler & Koch
$199.95Heckler and Koch 30 Round Magazine - RAL 8000 for HK416 and HK MR556 Heckler & Koch reliability and durability in a 30 round 5.56 mm Polymer Magazine. Designed to provide optimal ammunition feeding for any M16, M4, AR15-type weapon, the HK 30-Round...HKP-18780$199.95 -
HK SL8, G36 Piston Rod Assembly
H&K Heckler & Koch
$64.95Heckler and Koch HK German G36 and HK SL8 Gas Piston Rod Spring Assembly Great for spare parts or to use on that HK SL8-G36 conversion. This is a high-wear item and a must-have spare part. Compatible With: HK SL8-6, SL8-1 HK G36E, G36 full...HKP-02000$64.95 -
HK UMP, USC Cocking Lever Support Tube
H&K Heckler & Koch
$19.95HK UMP & USC Cocking Lever Support TubeHKP-01883$19.95 -
HK21, HK21E, HK23E, HK11A1 Barrel Handle
Michaels Machines
$74.95HK 21, 21E, 23E, HK11 Barrel Handle US-made barrel handle. A great alternative for the original barrel handles that are no longer in production. Available in black or OD green and compatible with 5.56 and .308 platforms. Compatible...HKP-00244-M$74.95