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
HK91, G3 Extractor
PTR
$30.99PTR HK 91/G3 (7.62x51/.308) Extractor US Made by PTR. Made from stainless steel. Compatible With: HK G3 PTR 7.62 X 51mm modelsHKP-16222$30.99 -
On Sale
HK33, HK53, HK93 Clubfoot Stock
Michaels Machines
Now: $267.95Was: $315.95MM Club Foot Stock for HK33, HK53, and HK93 This clubfoot ships assembled with a mix of German and US-made parts. Includes: MM 21E Clubfoot Central Stock Section - US Made US Heavy Rubber Buttpad - US Made HK G3 to HK33, HK93 Back Plate - German HK...HKP-01455Now: $267.95Was: $315.95 -
HK33, HK53, HK93 Cleaning Kit - 5.56 / .223
HKP HK Parts / Heckler & Koch
$89.95H&K HK 93/53/33 (5.56/.223) Cleaning Kit New Factory HK German 93, 33, 53, or other HK .223/5.56's cleaning kit for all HK's or clones. This is the factory HK cleaning kit issued by HK as an OEM product. Includes: Cleaning rod for short and long...HKP-01550$89.95 -
On Sale
HK MP5SD Cocking Tube End Cap Weldment - 9mm
USA
Now: $27.95Was: $34.95MP5SD Cocking Tube End Cap Weldment For MP5 Front Sight Towers Milled from solid billet. US made MP5SD cocking tube end cap weldment for use with all MP5 front sight towers. Available exclusively at HK Parts.HKP-15702Now: $27.95Was: $34.95 -
On Sale
Magpul M3 PMAG Magazine - 7.62x51 / .308 - 25 Round
Magpul
Now: $20.95Was: $24.95Magpul PMAG 25-LR 25-Round 7.62 NATO Magpul M3 PMAG for SR25/M110 pattern rifles. Features a true 25-round capacity, constant-curve body, and snap-on impact/dust cover. Designed specifically for military-issue MK11/M110 rifles and mil-spec...HKP-16908Now: $20.95Was: $24.95 -
On Sale
AR-15 Magazine Lock Kit - California Legal
HKP HK Parts
Now: $7.95Was: $19.95HKP AR-15 California Legal Mag Lock KitHKP-15409Now: $7.95Was: $19.95 -
On Sale
HK CC9 Holster - Defender IWB - Right Hand
Black Ash Tactical
Now: $44.95Was: $49.95Black Ash Tactical Defender IWB Kydex Holster for HK CC9 Inside-the-waistband Kydex holster for the HK CC9. Each holster is handcrafted in the USA for a precise fit and a clean draw with positive retention. Features: IWB (inside-the-waistband)...HKP-22436-MNow: $44.95Was: $49.95 -
On Sale
HK MP5K, AP5-P Recoil Rod Assembly
MKE
Now: $54.95Was: $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 SP5K/MP5K/SP89 Century Arms AP5-P/AP5-M Clones and other HK...HKP-22389Now: $54.95Was: $64.95 -
On Sale
Century Arms AP51 A3 Telescopic Stock - BLEMISHED
MKE
Now: $327.95Was: $449.95MKE Century Arms AP51 A3 Telescopic Stock - BLEMISHED INSTALLATION MARKS COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Factory new MKE stock professionally...HKP-21926-BNow: $327.95Was: $449.95 -
HK MR762 A4 Gas Vent Screw - 1.0mm-2.5mm
H&K Heckler & Koch
$29.95Heckler and Koch MR762 A4 Gas Vent Screws German gas vent screw for MR762 A4 gas block. Specifications: Factory reference: 1.3mm is the common factory vent screw size for MR556 A4 Sizing reminder: Larger mm equals more venting, Smaller mm...HKP-21954-M$29.95 -
HK MP5, HK94 A3 Retractable Buttstock - Factory - Like New
H&K Heckler & Koch
$799.95H&K Heckler and Koch Factory A3 Like New Buttstock for HK MP5 and HK94 The original Navy-style German HK MP5 A3 stock is a rare find, as it's no longer in production and has been replaced by the MP5 F-style stock. We are offering the sought-after...HKP-21644$799.95 -
On Sale
HK SP5 ACR Stock or Brace Adapter
HKP HK Parts
Now: $125.95Was: $139.95HKP HK SP5 ACR Stock or Brace Adapter This adapter allows the ACR stock to be fully compatible with the SP5 and in-spec MP5 platforms. It’s built from aircraft-grade aluminum with a pre-installed buffer for a straightforward, drop-in conversion...HKP-21519Now: $125.95Was: $139.95