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 SP5K Trigger Housing - Ambi Navy 3 Position 0,1,F Pictogram - 9mm Spec Only - Clipped and Pinned
H&K Heckler & Koch
$449.95 - $484.95Heckler and Koch 3 Position 0,1,F Pictogram Ambi Navy Style Housing, Clipped and Pinned for HK SP5K Spec Only 9mm This HK German Navy housing is specifically designed for the HK SP5K. Featuring...HKP-17924-M$449.95 - $484.95 -
HK MP5 Optic Rail - M-LOK - Midwest G2
MI Midwest Industries
$136.95Midwest Industries HK MP5 Optic Rail M-LOK Mil-Spec optic rail designed for the HK MP5 platform featuring M-LOK attachment points. Provides a stable mounting surface for optics and accessories on MP5...HKP-22536$136.95 -
HK UMP Barrel Pin Screw
OMEGA
$13.95Omega UMP Barrel Pin Screw Barrel pin Screw that replaces barrel pins on Omega Gideon Shadow Compatible With: HK UMP HK USCHKP-22514$13.95 -
HK MP5, MP5K Optic Mount - Optic, NV Laser - Picatinny, Aimpoint T-1, T-2, ACRO P-1, P-2
MI Midwest Industries
$174.95Midwest Industries HK MP5, MP5K Optic and IR, NV, Laser Mount for Aimpoint T-1/T-2 and Aimpoint ACRO Tall, clamp-on optic and laser mount for MP5 and MP5K pattern firearms. Allows you to run a micro...HKP-22393-M$174.95 -
Out Of Stock
HK MP5, SP5 ACR Folding Stock With Adapter - Picatinny
F5 MFG
$314.95F5 HK MP5/SP5 ACR Folding Stock w/Adapter - Picatinny The HKP picatinny end cap with the F5 ACR stock allows users to easily swap this, and other stocks, between their MP5 and other platforms. This...HKP-22350-M$314.95 -
Picatinny Optic Mount Shield - ACRO P2, C2 - S.W.O.R.D.S
Frost Defense
$269.95Aimpoint ACRO P-2, C-2 Optic Mount - S.W.O.R.D.S - Picatinny Mount The S.W.O.R.D.S Enhanced optic shield designed for Aimpoint ACRO P2/C2 red dot sights. This patent-pending mount system provides...HKP-22341-M$269.95 -
HK UMP, USC M-LOK Attachment Piece
HKP HK Parts
$29.95HKP HK UMP/USC M-LOK Attachment Piece Upgrade your UMP and USC with the HK Parts M-Lok attachment piece, designed to eliminate the hassle of snagging and shredding your knuckles on Picatinny rails...HKP-22249$29.95 -
HK MP5, MP5K Scope Tab - Billeted - Weldment
HKP HK Parts
$9.95HKP HK MP5/K Billeted Scope Tab - Weldment Billeted scope tab weldment for HK MP5, MP5K, and compatible clones. Provides a correct mounting point for optics. Compatible With:HKP-22063$9.95 -
On Sale
HK91, G3 Tactical Handguard - Low Profile
PTR
$70.09 - $109.95PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile Made from aircraft-grade aluminum, rock-solid, and lightweight. This forearm allows you to add up to 3 rails on your firearm. That includes...HKP-21806-M$70.09 - $109.95 -
On Sale
HK UMP, USC Top Rail for Optics with Screws - Extended - USED - BLEMISHED
H&K Heckler & Koch
Now: $37.46Was: $99.95H&K HK UMP & HK USC Extended Top Rail For Optics with Screws - USED - BLEMISHED MINOR SCRATCHES.HKP-20502-BNow: $37.46Was: $99.95 -
Picatinny Optic Mount - Low Profile - ACRO, NANO
B&T Brugger & Thomet
$115.00B&T Brugger and Thomet Aimpoint ACRO / NANO 22mm Low Mount The B&T ACRO NANO optic mount is a universal QD mount for any firearm featuring a Picatinny top rail. Keep your optic profile compact with...HKP-21728$115.00 -
HK91, G3 PTR ,Recoil Rod Assembly, Backplate - Painted
H&K Heckler & Koch
$54.95H&K HK91/G3 PTR & Recoil Rod Assembly-Backplate-Painted Our German HK backplate has been expertly refinished and Painted for exceptional durability. This backplate features an innovative guide screw...HKP-21647$54.95