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 USC Magazine Follower - .45 ACP
H&K Heckler & Koch
$12.95H&K USC (.45 ACP) Magazine Follower New HK German USC 10 Round magazine follower.HKP-16346$12.95 -
HK UMP, USC, G36, SL8 Rear Sight Support
H&K Heckler & Koch
$19.95H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Rear Sight SupportHKP-16362$19.95 -
HK UMP, USC, SL8, G36 Fixed Rear Sight Flat Spring
H&K Heckler & Koch
$8.95HK Heckler and Koch Fixed Rear Sight Flat Spring or Leaf Spring for HK G36, HK SL8 and HK USC, HK UMP Compatible With: G36 SL8 USC UMPHKP-16635$8.95 -
HK MSG90 Locking Roller -4 - 7.96mm Set -Titanium
H&K Heckler & Koch
$329.95MSG90 (7.62x51/.308) -4 Rollers 7.96mm Set -Titanium Half moon rollers. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need to order - plus-size rollers...HKP-02451$329.95 -
HK PSG1, MSG90 Ejector Lever
H&K Heckler & Koch
$79.95Heckler and Koch Ejector Lever for HK PSG1, MSG90 German-made ejector lever for PSG1 and MSG90 platforms. Direct replacement part built to original factory-spec for reliable extraction and correct bolt head function. Compatible With: PSG1, MSG90HKP-00537$79.95 -
Out Of Stock
HK91, G3 Barrel - 7.62 / .308 - 18" - Threaded 15x1 - Match
PTR
$199.95PTR HK G3/91 (7.62x51/.308) Match Grade Barrel - Threaded 15x1 Each barrel is current PTR production and has the proper number and depth of flutes for optimum functionality. This barrel is a medium contour barrel that is larger in diameter than a...HKP-00873$199.95 -
Out Of Stock
HK PSG1, MSG90 Handguard
H&K Heckler & Koch
$0.00HK German PSG1, MSG90 Forearm New HK German & Hard To Find. Perfect For The PSG1, MSG90 Conversions. We have many other PSG1 items available such as the PSG1 cocking tube, trigger group, stock etc.The PSG1 forearm will only work with the addition of...HKP-00529$0.00 -
Out Of Stock
HK MSG90 Trigger Housing - 2 Position 0,1 Pictogram - Clipped and Pinned
H&K Heckler & Koch
$0.00H&K MSG90 (7.62x.51/.308) 2 Position (0,1 Pictogram) Trigger Housing - Clipped & Pinned This clipped and pinned semi-auto trigger housing is designed for the MSG-90 rifle. It is compatible with 2-position 0,1 semi-auto style trigger packs,...HKP-00539$0.00 -
HK91, G3 Caliber Conversion Kit - .22LR - USED
H&K Heckler & Koch
$1,497.95Heckler and Koch HK G3, HK91 .22LR Caliber Conversion Kit - USED SOLD AS IS. NO RETURNS. Convert any HK91 or HK G3 rifle to cycle .22LR ammunition with this genuine HK caliber conversion kit. This kit is intended for marksmanship training and...HKP-01147$1,497.95 -
HK91, G3 4 Position (0,1,3,F Pictogram) Trigger Housing - Push Pin
H&K Heckler & Koch
$459.95H&K 91/G3 (7.62x51/.308) 4 Position (0,1,3,F Pictogram) Trigger Housing - Push Pin This authentic German HK trigger housing features a 4 position pictogram (0,1,3,F) and is designed for push pin style G3 or Zenith firearms. It is configured for use...HKP-17823$459.95 -
On Sale
HK51, HK53 Barrel Extension - Fluted - Urbach Style - Threaded 15x1 RH
HKP HK Parts
Now: $82.95Was: $149.95HKP HK 53/51 (5.56/.223) Urbach Style 8 inch Fluted Barrel Extension - Threaded 15x1 RH This 8" long fluted barrel extension is designed to extend the overall length of a 51 or 53 barrel to meet the 16" legal requirement. Ideal for those using an 8"...HKP-17638Now: $82.95Was: $149.95 -
HK33, HK93, PSG1 Match Barrel - 5.56 / .223 - 26"- MSG90 Style
HKP HK Parts
$499.95HK PSG-1, MSG-90 Style 5.56, .223 HK 93, HK 33 Match Barrel: This is the finest PSG1 barrel you can get for your custom HK93, SG1, PSG1 style build in 5.56. Built on trusted tooling to HK specifications. Perfect for that custom build or the for the...HKP-17008$499.95