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
Sig P320C +3 Magazine Extension
Tactical Precision MFG
Now: $22.95Was: $44.95TPM Sig P320C +3 Magazine Extension - Barrett Brown This extension is made from machined 6061 Aluminum. This magazine extension will increase capacity, increase reload speed and mag drops, and overall functionality of your pistol. Easy to install and...HKP-21277Now: $22.95Was: $44.95 -
On Sale
HK MP5 Brace Adapter - Folding
HKP HK Parts
Now: $119.95Was: $149.95HKP - HK MP5 Folding Brace Adapter The HK Parts brace adapter is precision-machined from a solid billet of aircraft-grade aluminum and features integrated QD sling attachment points. It is properly buffered with factory-correct “H” buffers...HKP-21217Now: $119.95Was: $149.95 -
On Sale
HK MP5 Trigger Pack - Single Stage Semi-Auto - SEF
HKP HK Parts
Now: $359.95Was: $449.95HKP/H&K MP5 9mm Semi-Auto SEF Single Stage Trigger Pack This trigger pack starts as a factory F/A trigger pack before being converted into a semi-auto trigger pack and receiving single-stage trigger work. This is the best option for users who...HKP-21083Now: $359.95Was: $449.95 -
On Sale
HK91 Handguard - M-Lok - BLEMISHED
HKP HK Parts
Now: $129.95Was: $159.95HK G3, HK91 & PTR Low Profile M-LOK Forearm - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED NEEDS MODIFICATION TO FIT ACCESSORIES COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED...HKP-17265-BNow: $129.95Was: $159.95 -
HK SP5 Trigger Group - SEF Navy - 9mm Match - Clipped and Pinned
H&K Heckler & Koch
$679.95Navy Style - SEF - Match Trigger Group - HK SP5 Ready to drop in your SP5 spec 9mm receiver. Great replacement for the 2 position trigger group. With the match trigger pack installed, the trigger slack take up is eliminated and travel is reduced. The...HKP-20665$679.95 -
Out Of Stock
HK VP Series Curved Trigger Safety Tab Kit
Lazy Wolf
$19.95Lazy Wolf Guns C1 Curved Trigger Tab and Spring Set for the HK VP Series Replacement trigger safety tab, spring, and roll pin kit as pictured for the HK VP9 series of LWG triggers. Ideal if you need a replacement LWG trigger safety tab,...HKP-20083$19.95 -
On Sale
HK SL8 Magwell - Used - Black
H&K Heckler & Koch
Now: $8.95Was: $9.95HK SL8 Magwell - Used - Black Used Magwell - Black - SL8HKP-20056Now: $8.95Was: $9.95 -
Out Of Stock
P90 Kit - Demilled Parts - 50 Round
FN
$3,149.95FN P90 Demilled Parts Kit Factory FN P90 F/A parts kit comes as pictured with all pieces less the actual receiver included one 50 round magazine. (Non FFL item as this is a parts kit) ** Magazine Capacity Restricted States: You will be...HKP-19639$3,149.95 -
On Sale
HK VP9B International Holster
Comp-Tac
Now: $71.95Was: $79.95Comp-Tac HK VP9B International Holster The International is an outside the waistband (OWB) holster with a modular mounting design giving the user 16 holster options in 1. Designed to be worn at 3:00 this holster is perfect for competition...HKP-19597-MNow: $71.95Was: $79.95 -
On Sale
HK MP5K, SP5K, SP89 Helmet Stock - Folding and Adjustable
B&T Brugger & Thomet
Now: $322.95Was: $379.95B&T HK MP5K, SP5K, SP89 Helmet Stock - Folding and Adjustable This Swiss-made folding helmet stock offers a compact, military-grade solution for MP5K-pattern firearms. Built from durable polymer and aluminum, it provides smooth length adjustment and...HKP-18101Now: $322.95Was: $379.95 -
HK P2000SK Barrel - .40 S&W - 3.25"
H&K Heckler & Koch
$259.95HK German Factory P2000SK .40 S&W Barrel Brand new HK P2000SK .40 Cal factory cold hammer forged polygonal rifled barrel. This barrel measures 3.25" and is drop-in ready. Compatible With: HK P2000SK .40 S&WHKP-01569$259.95 -
Out Of Stock
B&T APC223, APC300 Telescopic Stock - 3 Position
B&T Brugger & Thomet
$650.00B&T APC223, APC300 3-Position Telescopic Stock Swiss-made B&T telescopic stock for the APC223 and APC300. This is a military-grade factory stock supplied by B&T to law-enforcement and military worldwide. Specifications: Steel,...HKP-18312$650.00