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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Out Of Stock
HK416, MR556 Cleaning Kit - Green Pouch
H&K Heckler & Koch
$64.95H&K HK 416/MR556 Cleaning Kit with Green Pouch This is a genuine HK factory cleaning kit. Includes: Nylon storage bag, olive green Nylon brush Cleaning rod, 6 parts Barrel brush Chamber brush Oil brush Oil bottle, empty Cleaning wipes, 50 ea...HKP-21623$64.95 -
On Sale
HK MP5 Alpha Folding Stock With Direct Fit Adapter
MI Midwest Industries
$335.95 - $377.95MI/HKP HK MP5 Alpha Folding Brace/Stock Adapter The Midwest Industries Alpha folding stock paired with the HK Parts Picatinny rail adapter offers unparalleled versatility. Adjust your length of pull, cheek riser, and butt pad to your exact style of...HKP-21512-M$335.95 - $377.95 -
On Sale
HK MP5K Folding Stock Adapter - Black - BLEMISHED
HKP HK Parts
Now: $77.95Was: $139.95HK Parts Adapter for Side Folding Stock – HK MP5K, SP89, SP5K & Clone COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The HK Parts folding stock adapter...HKP-20799-BNow: $77.95Was: $139.95 -
Out Of Stock
HK PSG-1 Barrel - 7.62 / .308 - 25.5"
RCM
$849.95RCM Schneider PSG-1 Barrel Only the finest blanks in the industry can produce the best results on the range. Schneider Barrel Company makes that blank. This barrel will work perfectly with standard G3/91 trunnions, G3 barrel extensions, or...HKP-21193$849.95 -
On Sale
HK SP5K Bolt Carrier - Semi Auto
RCM
Now: $135.95Was: $159.95RCM HK SP5K Semi Auto Carrier SP5K semi-auto carrier machined completely from billet ordnance steel. RCM US made SP5K carrier is made to the most updated and latest SP5K specs and more. Tungsten filled, heat treated, phosphate finish and all hardware...HKP-20983Now: $135.95Was: $159.95 -
On Sale
HK MP5, MP5K Barrel Extension and Faux Suppressor - 8.85" - Threaded 15x1 RH
USA
Now: $143.95Was: $179.95HK MP5, MP5K Barrel Extension Faux Suppressor - 15x1 RH Perfect for that rifle build or for those looking for the MP5KN suppressed look. Dakota tactical review of this exciting new product on an MP5: DTAC Suppressor Review Specifications: Overall...HKP-20890Now: $143.95Was: $179.95 -
Out Of Stock
HK MP5 Trigger Housing - FBI 2 Position 0,1 Pictogram - 9mm
HKP HK Parts
$129.95US Made HK MP5 9mm 2 Position (0,1 Pictogram) FBI Style Trigger Housing This 922r compliant housing features a 2 position (0,1) pictogram. Specifications: 2 Position Pictogram Markings: 0,1 FBI Style Housing Compatible With: MP5HKP-20839$129.95 -
On Sale
Bolt Knob - Drake - Aluminum
Tactical Precision MFG
Now: $20.95Was: $39.99Drake Bolt Knob - Aluminum These bolt knobs are made from aluminum and are finished a in midnight bronze Cerakote and will fit any 5/16-24 threaded bolt handle. Features: Material: aluminum Color: black Threading: 5/16x24 Compatible...HKP-20773Now: $20.95Was: $39.99 -
On Sale
HK416, MR556 Super Modular Handguard - 10.5" - M-LOK
Geissele
Now: $449.95Was: $499.95Geissele 10.5" M-LOK Handguard for HK416 The super modular rail HK416 MK15 M-LOK was designed to replace the standard rail on an HK416 or MR556 weapon platform. The rail system utilizes the stock HK barrel nut, but incorporates the strength, rigidity...HKP-20327Now: $449.95Was: $499.95 -
On Sale
HK Standard Kit Pyramid Sight System
Outer Impact
Now: $63.95Was: $79.95The Heckler and Koch Pyramid Sight System The Pyramid Sight system offers four configurations (starter, standard, firefly, and master) for maximum flexibility. All of the HK pyramid sights systems feature steel front and steel rear sight bases...HKP-19963Now: $63.95Was: $79.95 -
On Sale
Ruger 10/22 Binary Trigger - Curved - BFSIII - .22LR
FA Franklin Armory
Now: $269.99Was: $299.95Franklin Armory BFSIII 22-C1 for Ruger 10/22 The Binary Firing System GEN 3 (BFSIII) is a 3-position trigger. Position 1: Safe. Will not fire Position 2: Semi. Fires 1 round per pull Position 3: Binary. Fires 1 round on pull and 1 round on...HKP-19865Now: $269.99Was: $299.95 -
On Sale
HK416, MR556 Rail System - 13.75" - M-LOK, Picatinny - FDE
KDG Kinetic Development Group
Now: $319.95Was: $399.95Rail System - 13.75" - Brown - M-LOK - HK MR556 The New KDG HK 556 M-LOK rails are direct mount rail system, replacing the factory HK 556 rail systems. These new rails are identical in design to their big brother, the KDG HK 762 M-LOK Rail system. Like...HKP-19243Now: $319.95Was: $399.95