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
HK MP5 Locking Piece - 100 Degree - Sold As Is - Gunsmith Special
USA
Now: $9.95Was: $33.95HK MP5 100 Degree Locking Piece - Sold As Is - Gunsmith Special This US-made MP5 100 degree locking piece is the correct locking piece for all HK MP5-style forearms. This locking piece has also now become the factory correct locking piece for all HK...HKP-99117Now: $9.95Was: $33.95 -
On Sale
HK21, FMP21 Teardrop Rail Set - T-Rail
HKP HK Parts
Now: $157.95Was: $197.95HKP HK21/FMP21 Teardrop Rail Set HK teardrop style reinforcement rails. The ultimate choice for period correct builds. Expertly crafted in the USA from high-quality 4140 steel, these ready-to-weld rails are engineered for precision and durability...HKP-21671Now: $157.95Was: $197.95 -
Out Of Stock
B&T MP9, TP9, APC9, SPC9, GHM9, KH9 Magazine - 20 Round - Improved Rubber Bumper
B&T Brugger & Thomet
$65.00B&T 20 Round Magazine 9mm with Improved Rubber Bumper The B&T factory 20 round magazine is designed for reliable performance in B&T firearms. Equipped with an upgraded rubber bumper for added durability and protection, it provides a secure...HKP-21714$65.00 -
On Sale
HK45 MOD 1 Compensator
HKP HK Parts
Now: $143.95Was: $179.95HK Parts MOD 1 Compensator: H&K HK45 The HK Parts MOD 1 compensator strikes a seamless balance of form and function. Users will immediately notice the reduction in muzzle flip and recoil, getting you back on target quicker. Each MOD 1 comp includes...HKP-21222Now: $143.95Was: $179.95 -
On Sale
HK MP5K 2-Stage Trigger Group - 9mm - Complete
Timney Triggers
$398.95 - $423.95Timney Trigger for MP5K, SP5K The SEF Timney trigger group comes completely assembled, ready to drop into your receiver. Features a 3rd generation German ejector lever, new SEF selector lever, and a brand new factory German housing. Available exclusively...HKP-20515-M$398.95 - $423.95 -
Out Of Stock
B&T APC Stock or Brace Adapter - Telescopic
B&T Brugger & Thomet
$94.95B&T APC9/APC45/APC223/APC300 Telescopic Brace/Stock Adapter Swiss made B&T brace adapter for the APC9/APC45/APC223/ACP300 telescopic stock. Adapter replaces the buttpad on the BT-20394 and BT-20407 APC telescopic stocks and allows the attachment...HKP-19860$94.95 -
On Sale
AR M-LOK Handstop Laser - Green
Viridian
Now: $160.95Was: $178.95Viridian AR M-LOK Hand Stop Laser - Green Viridian, the leader in weapon-mounted technology, is responsible for a number of firearm innovations - including green and red laser sights. Viridian's new HS1 is the world's first AR hand stop with an...HKP-19464Now: $160.95Was: $178.95 -
Out Of Stock
M-LOK Rail Section - 7 Slot - KeyMod - Red
Strike Industries
$25.95Strike Industries M-LOK & KeyMod Universal 7 Slot Rail Section - Red Strike Industries LINK attachment system takes the age old question Key-Mod vs. M-LOK and came up with the ultimate solution, a dual interface design compatible with both M-LOK and...HKP-19188$25.95 -
On Sale
HK G36K, G36C Rail - Side
HKP HK Parts
Now: $19.95Was: $24.95HK Aftermarket G36K/G36C Side Rail For Handguard This will fit the sides (left or right) of the forearm on the G36K and G36C forearms. Comes with all mounting hardware. Each rail is sold individually.HKP-00273Now: $19.95Was: $24.95 -
On Sale
Gamma Muzzle Brake - Threaded 5/8x24 RH
Aero Precision
Now: $88.95Was: $104.95Aero Precision (7.62x51/.308) Muzzle Brake Gamma - Threaded 5/8x24 RH The VG6 GAMMA is a muzzle brake and compensator hybrid. It virtually eliminates recoil and minimizes muzzle movement. The unique combination of both braking and compensating features...HKP-19675Now: $88.95Was: $104.95 -
$7.95 -
Out Of Stock
HK USP .45 ACP Complete Slide
H&K Heckler & Koch
$499.95H&K HK USP .45 ACP Complete Slide HK factory date coded, un-serialized & German manufactured. These slides are and hard to find. Includes: Complete Slide Front & rear sights Firing pin Firing pin block Firing pin block spring 2 X 3 X 14mm...HKP-16723$499.95