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 10 Round HK VP40/P30 .40 S&W Magazine
H&K Heckler & Koch
$54.95HK VP40, P30, P30S & P30L .40 S&W - 10 Round magazine New HK German manufacture. It is a CA, NY, compliant magazine because it holds 10 rounds. Hard to find in this configuration. Compatible With: HK VP40 HK P30/P30L .40 S&W$54.95 -
HK45, USP, P30, P2000 Stock Hammer Spring - 12LB
H&K Heckler & Koch
$5.9512LB Stock Hammer Spring This is the spring used in some custom trigger jobs, along with other trigger return and firing pin block springs. This spring can be used on the P30 along with the light trigger return spring and light firing pin block...$5.95 -
HK USP Tactical Barrel - .45 ACP - 5.07" - Threaded 16x1 LH
H&K Heckler & Koch
$310.99H&K USP .45 ACP Tactical Barrel - Threaded 16x1 LH HK USP .45 ACP German factory threaded barrel for use with flash hiders or sound suppressors. This is a drop in barrel for any of the HK USP .45 ACP pistols. No gunsmith is required as this is an...$310.99 -
HK SL8 (5.56/.223) 10 Round Factory Magazine
H&K Heckler & Koch
$65.95HK German 10-Round Magazine For The SL8-1 & SL8 Firearms. Made in Germany and factory fresh.$65.95 -
AIM Sports Low Profile Red/Green Dot Micro Sight
AIM
$59.95Micro Red Dot Low Profile Sight With Green & Red Dot Option For those that require a good, reliable, well made optic without the name brand or heavy price tag, this is an outstanding choice. This micro optic is rated for anything from .22 all they...$59.95 -
HK MP5 Replacement Buffer For Folding Stock Or End Cap
Choate
$3.95Choate MP5 Replacement Buffer For Folding Stock Or End Cap Compatible With: Choate MP5 and MP5K Stocks or End Caps (NOT compatible with MP5 .22 LR)$3.95 -
HK MP5 .22 LR Folding Stock
B&T Brugger & Thomet
$249.95B&T Folding Stock for MP5 .22 LR Swiss made B&T folding stock for the MP5 22 LR. This is a military grade stock section as supplied by B&T to HK Germany. B&T Switzerland has supplied these to law enforcement and military units around the...$249.95 -
HK VP9, VP9SK, VP40 Clamping Sleeve For Drop Safety Axle
H&K Heckler & Koch
$6.95Clamping Sleeve For Drop Safety Axle VP9, VP9SK & VP40 This is the roll pin that goes in the side of the slide and retains the drop safety.$6.95 -
HK P30, HK45, USP Firing Pin Block - New Style
H&K Heckler & Koch
$16.95H&K USP/P30/HK45 New Style Firing Pin Block A factory Heckler and Koch part. Compatible With: HK USP 45, 40 & 9mm HK USP Tactical, Elite, Expert HK USP Compact 9mm, .40 & .45 HK USPC Tactical 9mm, .40 & .45 HK P30, P30L, P30S &...$16.95 -
HK Rod Rivet - Recoil Guide - Used
H&K Heckler & Koch
$0.48H&K German Recoil Guide Rod Rivet-Used This rivet holds the stop pin and recoil spring captive and in place to the recoil rod itself. Compatible With: G3, 91, 33, 93, 53 MP5, 94 MP5K SP89 HK21 variants$0.48 -
HK MP5, MP5K 9mm Muzzle Brake - 3-Lug - QD
HKP HK Parts
$109.95HKP MP5, MP5K 9mm Muzzle Brake - 3-Lug Easily attaches to MP5-spec. 9mm tri-lug barrels. This HK muzzle brake features the new style locking latch that seats flush and doesn't come off while shooting like the 1st generation style were prone to...$109.95 -
HK Retaining Ring - Flash Hider
H&K Heckler & Koch
$1.49HK Flash Hider Retaining Ring Brand new HK German manufacture. HK flash hider, muzzle break retaining ring. This item is the ring that fits inside the flash hider that indexes with the splines of the HK barrel to provide a positive lockup of...$1.49