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 VP9SK, P30SK Magazine - 20 Round - 9mm
HKP HK Parts / Heckler & Koch
$89.9510 Round Magazine with Black +10 Extension - 9mm - HK VP9SK & P30SK Drop-in magazine ready to go! HK Parts takes an existing 10 round magazine a +10 magazine extension and assembles them into a working 20 round magazine. Compatible With: HKP30...HKP-20599$89.95 -
HK G3, HK33, HK93 Bayonet with Scabbard - Surplus
H&K Heckler & Koch
$106.95HK Heckler and Koch Bayonet with Scabbard - Surplus for HK G3, HK33, HK93 Genuine German HK military surplus bayonet in used, good condition. These are the 12-groove version of the popular military bayonet. Scabbard is included. Compatible...HKP-19691$106.95 -
On Sale
HK416, COLT M4 Magazine Spring - .22LR - 20 Round
HKP HK Parts
Now: $1.95Was: $3.95HKP 20 Round HK416 .22LR and Colt M4 .22LR Magazine Spring A good supply of spare mag springs is a must. These are ideal to have on hand as the spring can become damaged or worn out. New production mag spring for your Umarex HK416 & Colt 20 round 22...HKP-14410Now: $1.95Was: $3.95 -
HK Mark 23 Extractor Spring
H&K Heckler & Koch
$9.95Extractor Spring For HK Mark 23 Or SOCOM Pistol New HK German factory nickel-plated extractor spring. A great spare to have on hand and one of the highest wear and replacement parts on the Mark 23. Compatible with all models and years of the Mark 23...HKP-01430$9.95 -
HK USP Buffer Spring
H&K Heckler & Koch
$9.95HK USP Recoil Rod Secondary Buffer Spring This is the spring found under the larger primary recoil spring on the recoil assembly Compatible With: HK USP 45 HK USP 40 HK USP 9mm All HK USP Tactical models HK Elite, ExpertHKP-02470$9.95 -
HK Pistol Trigger Axle
H&K Heckler & Koch
$9.95HK Pistol Trigger Axle Compatible With: HK USP 9mm .40 S&W .45 ACP HK USP Compact 9mm .40 S&W .357 SIG .45 ACP HK P30 HK P30L HK P30SK HK P2000 HK P2000SK HK45 HK45 CompactHKP-01806$9.95 -
Out Of Stock
HK91, G3, PTR Training Bolt Group, Complete - Full Auto
H&K Heckler & Koch
$0.00Heckler and Koch F/A Complete Training Bolt Group for HK91, G3, and PTR Surplus HK German Plastic training ammo bolt group. To be used with the readily available and cheap plastic tipped training ammo only! A neat collectible item as only a small...HKP-18265$0.00 -
Out Of Stock
HK416, MR556 Handguard - 9.75" Quad Rail - RAL8000 - Picatinny
H&K Heckler & Koch
$497.95H&K HK MR556/416 Handguard Picatinny Quad Rail - 9.75" - RAL 8K Handguard with Picatinny quad rail profile on 3, 6 and 9 o'clock, STANAG 4694 profile on 12 o'clock. New HK German. Compatible With: All 14.5", 16.5", & 20" models HK MR556 HK...HKP-18553$497.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Front Folding Sight - 28mm
H&K Heckler & Koch
$209.95Heckler and Koch's 28mm Front Folding Sight for HK416, MR556, HK417, MR762 This sight attaches directly to the front gas block of the HK416, HK MR556, or HK417, MR762. This sight is to be used with the proper (caliber and barrel length specific)...HKP-00026$209.95 -
On Sale
HK G36 Backplate, Complete - Recoil Buffer and Assembly
USA
Now: $71.95Was: $84.95HK G36 Backplate Complete With Recoil Assembly New G36 Backplate with new G36/SL8 recoil buffer and recoil assembly. This assembly does include the recoil rod retaining screw. This is a great spare or replacement to have on hand. These are also required...HKP-18537Now: $71.95Was: $84.95 -
HK G36 Retractable Buttstock - 4 Position - Folding
H&K Heckler & Koch
$329.95HK G36, G36k, G36C, & SL8 Conversion Rear Stock Assembly The G36 KV stock, as it is known, was built by HK for a military contract and is built HK tough with an overall length of 8.5 inches (fully collapsed) to 11.40 inches when fully extended. Each...HKP-02682$329.95 -
HK UMP, USC Extractor - .45 ACP
H&K Heckler & Koch
$49.95New USC & UMP .45 Extractor - German Compatible with both the USC & UMP. Perfect for spares as they are prone to breakage and are a common wear item. Please Note: HK considers this a high wear and replacement item. Once it is removed from the...HKP-00265$49.95