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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On Sale
HK G36, SL8 Barrel Mandrel
Other
Now: $98.95Was: $109.95Barrel Mandrel For Removal and Installation of HK G36 and HK SL8 Barrels A mandrel barrel changing tool for firearms is a specialized rod inserted into the barrel to provide internal support and alignment during the process of removal or installation...HKP-02608Now: $98.95Was: $109.95 -
On Sale
HK VP9, P30 Magazine - 20 Round - 9mm
HKP HK Parts
$63.95 - $80.95HKP HK Parts Complete 9mm 20 Round Magazine for HK VP9 and HK P30 Each mag comes fully assembled and ready for use. HK Parts takes an existing 15 round magazine and the +5 mag extension and assembles them into a working 20 round magazine...HKP-21093-M$63.95 - $80.95 -
On Sale
HK Semi Auto Shelf for Receiver - Billeted
HKP HK Parts
Now: $13.95Was: $17.95HKP Semi Auto Shelf for Receiver - Billeted HK Semi Auto Shelf, Hanger Block to HK's factory specifications for c/p trigger housings. Weld on shelf that is the needed receiver block that welds to the rearward portion of the magwell to allow the use of...HKP-21470Now: $13.95Was: $17.95 -
On Sale
HK MP5, MP5K Thread Protector - 9mm - 1/2x28 RH
HKP HK Parts
Now: $11.95Was: $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-16883Now: $11.95Was: $14.95 -
On Sale
HK USPC, P30 Magazine Adapter
X-Grip
Now: $13.95Was: $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-16671Now: $13.95Was: $15.95 -
On Sale
HK91, G3, PTR Dual Magazine Clamp
HKP HK Parts
Now: $23.95Was: $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-19634Now: $23.95Was: $29.95 -
On Sale
HK VP9 Optic Plate #5 - Burris Fastfire, Vortex Viper, Venom - Red Dot Pistol Mount
HKP HK Parts
$23.95 - $31.95HKP/H&K VP9 Series 9mm Fastfire, Vortex Optics Plate #5 The finest aluminum mounting solution for your HK VP9 Series Optic Ready model. New solid billet machined aluminum optics plate. Each plate is CNC machined from a solid billet of ordnance grade...HKP-19689-M$23.95 - $31.95 -
On Sale
HK 9mm Thread Adapter - Barrel - Converts 13.5x1 To 1/2x28 LH
Kaw Valley Precision
Now: $26.95Was: $29.95Kaw Valley Precision 9mm Thread Adapter Converts your HK 9 mm Barrel from 13.5x1 LH To 1/2x28 Converts barrel thread pitches to match desired muzzle device thread pitches. For example, this adapter converts a 13.5x1 LH barrel thread to a 1/2x28 thread,...HKP-19991Now: $26.95Was: $29.95 -
HK416, MR556, HK417, MR762 Pistol Grip with Storage - Black
H&K Heckler & Koch
$49.95Heckler and Koch's Pistol Grip with Storage for HK416, HK MR556, HK417, HK MR762 New HK German factory battle grip with a storage compartment in the bottom. Each grip will fit all AR-15 and M-16 lower receivers as well. It has a superior fit and feel to...HKP-00033$49.95 -
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 -
On Sale
HK USP, Mark 23 Enhanced Magazine Extension Kit - .45 ACP - +5
HKP HK Parts
Now: $39.95Was: $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-MNow: $39.95Was: $49.95 -
HK MP5, HK33 HK53, HK93 Paddle Mag Release Bushing - Full Auto
H&K Heckler & Koch
$6.95Heckler and Koch New Full Auto Paddle Magazine Release Bushing for HK MP5 and HK90 New HK German paddle magazine release bushing for all 90 series HK weapon systems. Used for installing a paddle mag release. Please Note: This is NOT for use on...HKP-00847$6.95