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 MP5, SP5K, SP89, Optic Mount Bundle - Holosun Reflex X2
Holosun
$394.95Holosun X2 - Red 2 MOA Dot & 32 MOA Circle - Optic Mount - Bundle - HK MP5 Includes: (1) Holosun Reflex X2 MRS Red Solar (1) MP5 RMR Optic Mount The finest mounting solution to properly mount your RDS on your MP5 or any other receiver...HKP-20735$394.95 -
HK MP5, AP5 Firing Pin Spring
MKE
$4.88HK MP5, AP5 Firing Pin Spring The MKE firing pin spring is compatible with all MP5, AP5, AP5-P, MP5K, and .40/10 variants, as well as most in-spec clones. The firing pin is one of the most frequently replaced repair items, making this spring an...HKP-22485$4.88 -
HK MP5SD Barrel Shroud - Enhanced
HKP HK Parts
$129.95HKP MP5SD weldable suppressor shroud for HK MP5 SD builds The HKP SD shroud is fully de-burred with the handguard attachment lugs being machined in from the outset, not welded, which is commonly found in aftermarket-style shrouds. Specifications: Made...HKP-15701$129.95 -
On Sale
HK MP5, MP5K Optic Mount - Aimpoint ACRO P-1, P-2
HKP HK Parts
$63.08 - $98.95HKP HK MP5, MP5K Aimpoint ACRO P1, P2 Optic Mount The HK Parts Aimpoint ACRO low-profile mount is perfect for shooters seeking a minimalistic mount with an absolute co-witness. Crafted in the US from aircraft grade aluminum and coated in...HKP-21229-M$63.08 - $98.95 -
HK MP5, MP5K Thread Protector - 9mm - 1/2x28 RH
HKP HK Parts
$14.95HKP/H&K MP5/K 9mm Thread Protector - Threaded 1/2x28 RH This US-made thread protector is specifically designed for HK MP5, MP5K, and threaded barrel applications. Ideal for MP5, MP5-N, and MP5K-N style barrels, it is the factory-correct protector for...HKP-16883$14.95 -
HK91, G3 Rear Sight Assembly
H&K Heckler & Koch
$39.95HK German G3, 91, PTR Rear Sight Assembly Complete - HK German factory rear sight assembly with all hardware included. We offer the new HK sights at the BEST price in the country. Each set comes complete with all parts and all mounting hardware included...HKP-18163$39.95 -
HK23, HK21, HK11, MG3 Ammunition Belt Starter Tab
H&K Heckler & Koch
$5.95H&K HK21/MG3 Ammo Belt Starter Tab - 7.62x51/.308 Starter tabs for HK21 and MG3 belt-fed rifles. Compatible With: HK 23/21/11HKP-21439$5.95 -
HK USP, Mark 23 Enhanced Magazine Extension Kit - .45 ACP - +5
HKP HK Parts
$49.95HKP HK USP .45 ACP/Mark 23 Enhanced Magazine Extension Kit +5 HK Parts USP .45/Mark 23 enhanced +5 magazine extension. Our design represents a symbiotic balance of form and function. The added grooves enhance dexterity during those quick mag swaps while...HKP-21458-M$49.95 -
HK USPC, P30 Magazine Adapter
X-Grip
$15.95X-Grip HK USPC/P30 Magazine Adapter The XGRIP HKUSPC is a new patent pending OEM factory accessory for the HK USP Compact that enhances the versatility, look, and feel of the gun. Features: Versatility: Size of a Compact, capacity of a Full-size The...HKP-16671$15.95 -
HK MP5K Vertical Foregrip - M-LOK 3 Slot Rail
H&K Heckler & Koch
$128.95H&K / Magpul HK MP5K VFG w/Magpul 3 Slot M-LOK Rail New German HK VFG for the MP5K platform is now M-LOK compatible and comes pre attached with a Magpul M-LOK 3 slot Rail. The perfect combination to install lights or lasers. M-LOK slots are...HKP-20956$128.95 -
HK91, G3, PTR Dual Magazine Clamp
HKP HK Parts
$29.95HK91, G3, PTR - .308/762 Dual Mag Clamp The HK91, G3 magazine grip or dual magazine clamp. Holds two magazines together for ease of use and easy access to 2 magazines. Half the weight of the factory mag clamp. HK Parts highly recommends this mag...HKP-19634$29.95 -
HK MP7 Magazine - 4.6x30mm - 30 Round
H&K Heckler & Koch
$81.95MP7 30 Round Magazine New factory German HK 30-round magazine for the 4.6x30mm HK MP7A1 & MP7A2 weapon system. This is a popular spare magazine option as it is not too large and not too small of capacity.HKP-02455$81.95