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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HK21 Recoil Spring
H&K Heckler & Koch
$79.95H&K HK21 (7.62x51/.308) Recoil Spring New HK Factory HK21 triple braided recoil spring. Compatible with early HK21's manufactured by HK and FMP. The 21E requires a different spring.HKP-00238$79.95 -
HK91, G3 Barrel Chamber Flute Cleaning Brush
H&K Heckler & Koch
$25.95Heckler and Koch New Chamber Flute Brush for HK91 and HK G3 7.62x51 / .308 This brush is a must-have for cleaning the chamber flutes on a HKG3 or HK91-style firearm. If the flutes become clogged or dirty, the firearm will cease to extract properly...HKP-00500$25.95 -
On Sale
HK MP5, HK94 Folding Stock
Choate
Now: $186.95Was: $219.95Choate Folding Stock for HK MP5 and HK94 Each stock features the same quick open steel housing and folding arm found on all HK stock offerings. Each stock is backed by the manufacturer's lifetime warranty but built tough enough that you will never have...HKP-00171Now: $186.95Was: $219.95 -
On Sale
Firearm Cleaning Oil - Break Free CLP - .5 oz
Safariland
Now: $3.95Was: $4.95Break Free Cleaner, Lubricant and Preservative 1/2 OZ. Features: Penetrates and spreads along metal surfaces into every, crack, pit and crevice to undercut contamination and lift. carbon, fouling and residue away. Long-lasting lubricating film...HKP-15435Now: $3.95Was: $4.95 -
Out Of StockOn Sale
HK VP9L Barrel - 9mm - 5.6" - Threaded 1/2x28 RH
RCM
Now: $235.95Was: $262.50RCM HK VP9L 9mm Tactical Barrel - Threaded 1/2x28 RH Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest threaded replacement barrel for the HK VP9L 9mm pistol,...HKP-19203Now: $235.95Was: $262.50 -
HK91, G3 Cocking Handle - Rubberized
H&K Heckler & Koch
$32.95HK German G3 & HK 91 Rubberized Cocking Handle - Newest Style A genuine Heckler & Koch part. This is the latest style cocking handle that replaces the standard plastic style cocking handle that chips, cracks, and eventually falls off. This new...HKP-00509$32.95 -
HK91, G3 Slimline Handguard - OD Green - Used
H&K Heckler & Koch
$14.95H&K 91/G3 (7.62x51/.308) Slimline Forearm - OD Green - Used This is a used German Military surplus OD green Slimline Forearm with a heat shield. Each forearm is in good condition and can be restored with a bit of TLC. The conditions range from good...HKP-16265$14.95 -
HK VP9, P30, HK45 Adjustable Match Sights Fiber Optic
H&K Heckler & Koch
$117.95H&K HK VP9, HK P30, HK 45 Adjustable Match Sights Fiber Optic - Other LPA Match Sights with Fiber Optic inserts. Adjustable in elevation and windage (front and rear sight set) Compatible With: HK VP9, VP9SK, VP40 (Excluding VP9 Optics Ready) HK...HKP-18828$117.95 -
HK90 Series Compression Spring for Shifter Rod on Burst Trigger Packs
H&K Heckler & Koch
$10.95H&K Burst Trigger Pack Compression Rod Spring Burst pack compression spring for compression rod found in all HK Burst Trigger Packs. This part, along with the compression rod, is the number one most common wear or breakage parts in HK Burst Packs...HKP-16199$10.95 -
On Sale
HK MP5 Optic Mount - Raised - Picatinny
HKP HK Parts
Now: $107.95Was: $134.95HKP HK MP5 Raised Picatinny Optic Mount The HKP raised Picatinny optic mount was engineered for maximum versatility. Unlike other optic mounts with an absolute or lower third cowitness, our mount provides an unobstructed view of the factory HK...HKP-21819-MNow: $107.95Was: $134.95 -
On Sale
HK416, MR566, HK417 MR762 Buffer Retainer
HK HAUS
Now: $7.95Was: $9.95HK Haus Buffer Retainer for HK416, HK417 New HK USA manufacture for the HK416 and HK417 family of firearms. Made from stainless steel.HKP-20040Now: $7.95Was: $9.95 -
HK45, HK45 Compact Magazine Spring - 10 Round
H&K Heckler & Koch
$6.95Heckler and Koch 10 Round Magazine Spring for HK45, HK45 Compact Factory German HK magazine spring for the 10-round HK45 and HK45 Compact magazines. Made from high-strength steel and designed to maintain proper feeding pressure for reliable function...HKP-01848$6.95