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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On Sale
HK21 Firing Pin - USED - BLEMISHED
H&K Heckler & Koch
Now: $39.95Was: $79.95H&K 21 (7.62x51/.308) Firing Pin - USED - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Compatible With: HK21HKP-00546-BNow: $39.95Was: $79.95 -
On Sale
HK MP5SD Rubber Handguard - BLEMISHED
H&K Heckler & Koch
Now: $168.95Was: $229.95HK German MP5SD Rubberized Steel Handguard VARYING CONDITION SHOWN - SOLD INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Ideal for HK MP5SD 9mm...HKP-00136-BNow: $168.95Was: $229.95 -
On Sale
HK VP40 Gen 1 Rail Mount Compensator - Blue - Non-Threaded - BLEMISHED
HKP HK Parts
Now: $93.95Was: $189.95HKP HK VP40 Gen 1 Rail Mount Compensator - Blue - Non-Threaded - BLEMISHED DOES NOT INCLUDE ALLEN WRENCH 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...HKP-99082Now: $93.95Was: $189.95 -
On Sale
Dual Magazine Pouch - 338LM - Velcro Mount
B&T Brugger & Thomet
Now: $12.95Was: $24.95B&T Dual Magazine Pouch - 338LM Designed for the B&T APR338 but will fit other, similarly sized magazines. Made from heavy duty Cordura fabric in Poland by NFM Group.HKP-21883Now: $12.95Was: $24.95 -
On Sale
HK MP5 Cocking Tube - Extrusion - 4" - Gunsmith Special
USA
Now: $14.95Was: $39.95HK MP5 4" Cocking Tube Extrusion - Gunsmith Special This 4" cocking tube extrusion is ideal for custom HK-style firearm builds, repairs, or refurbishments, providing a solid foundation for restoring or fabricating cocking tubes on HK MP5, G3, and similar...HKP-99060Now: $14.95Was: $39.95 -
HK21E, HK23E Hammer, Strut Assembly
H&K Heckler & Koch
$339.95H&K HK21E/23E Hammer & Strut Assembly This original HK hammer and pinned strut assembly is sourced directly from Germany, providing the correct replacement or perfect upgrade for your HK21E or HK23E. Most U.S. HK21E/23E-style firearms are...HKP-21855$339.95 -
On Sale
HK MP5 Dual Folding Stock with Adapter - 9mm
HKP HK Parts / Strike Industries
Now: $274.95Was: $319.95HKP HK Parts and Strike Industries 9mm Dual Folding Stock with Adapter for HK MP5 The Strike Industries Dual Folding Stock paired with the HKP MP5 picatinny adapter is one of the best options on the market for those looking for a light,...HKP-21768-MNow: $274.95Was: $319.95 -
B&T Blast Deflector - Rotex IIA Interface - Glass Breaker
B&T Brugger & Thomet
$280.00B&T Blast Deflector with Glass Breaker - Rotex IIA Interface B&T blast deflector with glass breaker features a Rotex IIA Interface, designed to work with non-Pro APC223 and APC308 muzzle devices. Compatible With: B&T APC223...HKP-21776$280.00 -
Out Of Stock
HK416, MR556 Flash Hider - Threaded 1/2x28
B&T Brugger & Thomet
$125.00B&T Brugger and Thomet's Flash Hider - for 5.56mm NATO caliber weapons threaded 1/2x28 Factory B&T 1/2x28 flash hider for 5.56 rifles. Compatible With: HK 416 HK MR556 HK MR223 B&T APC223 AR-15 M16 5.56 / .223 firearms threaded...HKP-21757$125.00 -
Out Of Stock
B&T APC9, GHM9, SPC9 Lower Trigger Group - Aluminum
B&T Brugger & Thomet
$689.95B&T Aluminum Lower Trigger Group for APC9, GHM9, SPC9 B&T factory semi-auto lower trigger group for all APC9, SPC9, and GHM9 platforms. Made from hard-coat anodized aluminum. Compatible With: B&T APC9 B&T GHM9 B&T SPC9HKP-21756$689.95 -
HK MP5, SP5, G36 Helmet Stock Cheek Support
B&T Brugger & Thomet
$168.00B&T Brugger and Thomet Helmet Stock Cheek Support for HK MP5, HK SP5, and HK G36 B&T cheek support for B&T helmet stocks. Compatible With: MP5, MP5K SP5, SP5K G36HKP-21684$168.00 -
Out Of Stock
HK MR762 Single Magazine Pouch - Tan Camo
H&K Heckler & Koch
$89.95H&K HK MR762 Single Magazine Pouch - Tan Camo Factory HK single magazine pouch, Molle compatible Compatible With: HK MR762HKP-21622$89.95