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, SP5 Fixed Stock - A2 - Green
Michaels Machines
$199.95Michaels Machines A2 Fixed Stock made in the USA for HK MP5 - OD GREEN Each stock counts as one US made 922r compliant part. Simply the best US made HK MP5 stock featuring a rubberized backplate that reduces felt recoil as well as carrier abuse. Ideal...HKP-18804$199.95 -
HKP Shirt - Short Sleeve - Gray
HKP HK Parts
$14.95HKP Short Sleeve Shirt - Gray Get your hands on some of our premium new apparel! Featuring our sleek new logo printed over soft cotton, this shirt is certain to catch an eye at the range! Features: Unisex fit Fine cotton High fidelity DTG...HKP-21021-M$14.95 -
HK45C, HK45CT Barrel - .45 ACP - 4.5" - Threaded 16x1 LH
H&K Heckler & Koch
$339.95Heckler and Koch HK45 Compact Tactical Barrel - Threaded 16x1 LH New HK German HK45C threaded tactical barrel. A drop in barrel for the HK45 compact firearm. Features: Heckler and Koch Genuine Part Threaded For Use With Suppressors Threaded 16x1 LH Cold...HKP-01036$339.95 -
HK45 Compact, USP Compact Recoil Spring Assembly
H&K Heckler & Koch
$89.95Recoil Spring Assembly Complete With Captive Spring, Buffer, and Guide Rod A must-have spare part for your HK compact .45 pistol. New HK German factory fresh manufacture. Compatible With: USP Compact 45 USPC Tactical HK45 Compact HK45C TacticalHKP-01457$89.95 -
HK USP Night Sight Set
Trijicon
$127.95Trijicon - Tritium Night Sight, Fits HK USP, Green/Green, 3 Dot Trijicon Bright & Tough Night Sights are 3 dot iron sights that increase night fire shooting accuracy by as much as five times over conventional sights. Equally impressive, they do so...HKP-01609$127.95 -
Out Of Stock
HK416, MR556 Magazine Release Button
H&K Heckler & Koch
$16.95Heckler and Koch Magazine Release Button for HK416 and HK MR556 New HK German Manufacture. Compatible With: HK416, MR556 AR15, M4, M16 firearmsHKP-02656$16.95 -
HK MP5 Magazine Follower - .40 S&W, 10mm - USA
HKP HK Parts
$9.95HKP MP5 40/10 Magazine Follower A perfect replacement part for all HK MP5 40/10 magazines. Also counts as one 922r compliant part.HKP-16506$9.95 -
HK MP5, HK33, HK53, HK93, G3 Housing - SEF Navy - Polymer - Clipped and Pinned
H&K Heckler & Koch
$179.95HK Heckler and Koch SEF Navy Polymer Housing Clipped and Pinned for 9mm, .308, and .223 HK MP5, HK33, HK53, HK93, HKG3 This navy style housing fits all shelved receivers. Specifications: Made In Germany Clipped and Pinned Navy Style Housing SEF...HKP-00164$179.95 -
On Sale
HK21, HK11 Barrel - 7.62 / .308 - 14.5"
RCM
Now: $599.95Was: $684.95RCM HK21 and HK11 Barrel - 14.5" RCM HK11 barrels are expertly crafted from mil-spec 41V50 CHF blanks and are fully salt bath nitrided, delivering exceptional wear and corrosion resistance. These hybrid barrels feature an E cut barrel face and are...HKP-21631Now: $599.95Was: $684.95 -
HK VP9, P30 Magazine - 30 Round - 9mm
HKP HK Parts
$119.9930 Round Magazine Complete - 9mm - HK PARTS - HK VP9, HK P30 Drop-in magazine ready to go! HK Parts takes an existing 15 round magazine and a +15 magazine extension to assemble them into a working 30 round magazine. Not only will you be adding double the...HKP-21304$119.99 -
HK VP9 Match Barrel - 9mm - Threaded 1/2x28
RCM
$262.50RCM HK VP9 Match 9mm Barrel with Thread Protector - Threaded 1/2x28 Precision replacement barrel produced by RCM for the HK VP9 Match pistol. This barrel features a threaded muzzle for suppressors or other muzzle devices. Installs as a direct...HKP-21069$262.50 -
HK MP5K Folding Brace - Skeletonized
B&T Brugger & Thomet / SB Tactical
$239.95SB Tactical - B&T - HK MP5K Swiss Folding Brace - Skeletonized Factory Swiss B&T MP5K, SP5K folding pistol brace with the SB tactical/ B&T components assembled. A rare offering using the B&T Swiss manufactured folding polymer end cap with...HKP-21054$239.95