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
Tailhook Mod 1 Brace
Gear Head Works
$129.95Gear Head Works Tailhook Mod 1 The GHW Tailhook clamps to pistol buffer tubes or adapter spuds ranging from 1.17" to 1.2" in diameter. It features a limited rotation sling swivel QD socket as well...HKP-19134$129.95 -
Out Of Stock
HK MP5K Stock Adapter - Tailhook KES
Safety Harbor Firearms
$279.95KES HK MP5K Tailhook The all-new KES for the MP5k is designed to fit HK clones with two pins affixing the rear receiver cap. Specifications: Guide rods slide intoHKP-21089$279.95 -
On Sale
HK MP5SD Barrel - 9mm - 5.74" - Threaded 18x1
RCM
Now: $159.96Was: $199.95RCM HK MP5SD 9mm Barrel - Threaded 18x1 RCM HK Style MP5 SD Barrel. Specifications: Made In The USAHKP-02118Now: $159.96Was: $199.95 -
Bolt Head Locking Roller +5 - 8.05mm - New
HKP HK Parts
$8.99Roller +5 - New - 8.05mm HK Parts Standard (8.05 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture. Please Note: The price listed is per roller. Order 2...HKP-19440$8.99 -
HK MP5 Extractor Spring - .40 S&W, 10mm, .357 SIG
USA
$9.95US Made Extractor Spring for HK MP5 .40 S&W, 10mm, and .357 The extractor spring is the most common wear item on an MP5 and a must-have spare and replacement part. HK Germany no longer makes the MP5...HKP-00409$9.95 -
On Sale
HK21, FMP21 T-Rail Set
HKP HK Parts
Now: $95.96Was: $119.95HKP HK 21 (7.62x51/.308) Factory Style T-Rail Set HKP HK21 US made rails for all HK21 and FMP21 builds. Our steel T-rails incorporate an updated radius to address a weak link in previous iterations.HKP-21457Now: $95.96Was: $119.95 -
Out Of Stock
HK417, MR762 Magazine - 10 Round
H&K Heckler & Koch
$59.00Heckler and Koch HK MR762, HK417 10 Round Magazine - German HK Genuine HK German 10 round MR762 magazine. Compatible With: MR 762 HK 417HKP-02590$59.00 -
HK Rifle Cleaning Kit - Universal - Used
H&K Heckler & Koch
$4.95Original German Army Issue HK91, G3, PTR Cleaning Kit - Surplus Includes: Brass brush Oil brush Oil tube HandHKP-15612$4.95 -
HK VP9 Magazine Spring - 17 Round
H&K Heckler & Koch
$8.95Magazine Spring for 17 Round Magazine - HK VP9, VP9L, VP9 OR This magazine spring fits the VP9 17 round magazines. A must-have replacement item as magazine springs should be replaced on a regular...HKP-19323$8.95 -
Out Of Stock
HK MP5SD Locking Piece #5 - 120 Degree - 9mm
RCM
$34.95MP5SD 120 Degree Locking Piece - US This locking piece is a US made version of the factory German MP5SD 120 degree locking piece. This was the German locking piece that was marked #5 when HK Germany...HKP-16715$34.95 -
HK CC9 Magazine - 9mm - 10 Round - Extended Floorplate - Red Follower
H&K Heckler & Koch
MSRP: $49.99$38.95H&K HK CC9 10 Round Magazine - Extended Floor Plate HK USA HKCC9 10 round magazine- 9mm 10 round capacity Extended floorplate for ease of use a ergonomicsHKP-21571MSRP: $49.99$38.95 -
HK MP5, HK94, SP89, SP5K Magazine - 9mm - 10 Round
H&K Heckler & Koch
$89.95H&K MP5/MP5K/SP5K 10 Round Magazine: Heckler & Koch factory fresh magazine from this current year's production. Mags hold 10 rounds only so this is ideal for restricted states or for those that want...HKP-17872$89.95