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 Mark 23 Firing Pin Block Spring
H&K Heckler & Koch
$9.99HK Mark 23 Firing Pin Block Spring Compatible With: Mark 23 Socom .45HKP-01599$9.99 -
Out Of Stock
HK USP Light Conversion Kit - TLR-3, TLR-4
Streamlight
$24.95Streamlight TLR-3, TLR-4, TLR-4G HK USP Full Size Conversion Kit - Full Size USP This kit adapts a standard TLR-3 or TLR-4 to fit a USP full size pistol.HKP-16923$24.95 -
Out Of Stock
HK416, MR556 9" Quad Rail
H&K Heckler & Koch
$419.95Heckler and Koch HK 416/MR556 9" Quad Rail HK German 416, MR556 Quad Rail without mounting screw. Specifications: Length: 9 1/4" Color: cHKP-16858$419.95 -
HK416, MR556 Enhanced Field Cleaning Kit
H&K Heckler & Koch
$169.95HK HK416/ MR556 (all variants & models) field cleaning kit- Enhanced Cleaning kit made both the HK 416, MR556 series of rifles and MG's. Includes: Saf-T-Clad Cleaning RodHKP-17061$169.95 -
HK UMP, USC Cocking Lever Support Tube
H&K Heckler & Koch
$19.95HK UMP & USC Cocking Lever Support TubeHKP-01883$19.95 -
Out Of Stock
HK MP5 Barrel Chamber Flute Cleaning Brush - .40 S&W, 10mm
H&K Heckler & Koch
$29.95New HK German MP5 40, MP5 10mm Chamber Flute Brush This is a must-have brush to keep the flute clean and the firearm running the way it should. Get this item while you can, it is no longer in...HKP-00139$29.95 -
HK MP5, HK94 Tactical Folding Stock
Choate
$224.95Choate MP5 & HK94 Tactical Folding Stock Each stock is adjustable from 10" to 12" using the included adjustable spacer system, which will allow a full 2" range in adjustment for the specific user or...HKP-00778$224.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Tactical Grip
Ergo
$54.95Ergo Grip PSG1 Style Grip For MR556 & MR762 Just in and a great upgrade if you want the PSG1 style grip frame for your HK MR556, MR762 & HK416, HK417, G28 firearm. The ergonomically enhanced ERGO...HKP-17131$54.95 -
On Sale
Picatinny Optic Mount - 30mm Barrel Mount - Dual Rail
HKP HK Parts
Now: $3.71Was: $14.9530mm Barrel Mount, Dual Picatinny Rail Universal barrel mounted dual Picatinny for mounting accessories directly to barrels with a 30mm O.D. Features: Mounts directly to the barreHKP-16674Now: $3.71Was: $14.95 -
HK MP5K, AP5-P Recoil Rod Assembly
MKE
$64.95MKE HK AP5P/MP5K Recoil Rod Assembly The recoil spring assembly is a great item to have on hand for replacement and spares as this is a consumable wearable part. Compatible With: HK SP5HKP-22389$64.95 -
Out Of Stock
HK MP5 Barrel Retaining Pin - 5.015mm
H&K Heckler & Koch
$14.95H&K 90 Series Barrel Retaining Pin - 5.015mm Each barrel pin is used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK...HKP-22284$14.95 -
HK P30 EDC Magwell - Ultra Low Profile
HKP HK Parts
$59.95HKP HK P30 EDC Magwell - Ultra Low Profile The smallest and most streamlined EDC magwell for the HK P30, now featuring a fully functional funnel designed for rapid, seamless reloads. Crafted from...HKP-22189-M$59.95