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 MP5K, SP89, SP5K Stock or Brace Adapter - AR - 9mm
HKP HK Parts
Now: $73.28Was: $114.95HKP MP5K/SP89/SP5K 9mm AR Brace/Stock Adapter Each AR stock, brace adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct H buffers to...HKP-17138Now: $73.28Was: $114.95 -
HK MP5 9mm Grenade Launcher Attachment - 3-Lug
H&K Heckler & Koch
$149.95H&K MP5 9mm Grenade Launcher Attachment - 3-Lug This is a rare part and hard to come by. Perfect for MP5 9mm series. SpecifiHKP-16975$149.95 -
On Sale
HK MP5 Helmet Stock - Folding and Adjustable - 9mm
B&T Brugger & Thomet
Now: $242.22Was: $379.95B&T MP5 Folding Stock/Length Adjustable Helmet Stock Swiss made B&T folding and length adjustable helmet stock for the HK MP5 and compatible HK MP5 style firearms. This is a military grade stock as...HKP-18244Now: $242.22Was: $379.95 -
On Sale
M-LOK Bipod Mount
Magpul
Now: $14.96Was: $29.95Magpul M-LOK Bipod Mount The Magpul M-LOK Bipod Mount allows for the attachment of Harris®-style stud mounted bipods to M-LOK compatible hand guards and forends. The M-LOK Bipod Mount offers a...HKP-17269Now: $14.96Was: $29.95 -
HK51K Parts Kit - .308
HKP HK Parts
$2,099.95HK51K Parts Kit - 7.62 / .308 Previously only achievable by a handful of specialized builders, HK Parts brings the rare 51K to life through our comprehensive parts kit. Our 51K parts kit features a...HKP-22876$2,099.95 -
HK MP5 Slip Trip - Super Safety
War Hammer Armaments
$98.95War Hammer Armaments Slip Trip for HK MP5 Super Safety Trigger Groups War Hammer Armaments slip trip for MP5 Super Safety setups. Required to make a Super Safety work with the MP5 platform. Precision...HKP-22829$98.95 -
On Sale
HK VP9SK Holster - Defender IWB - Right Hand
Black Ash Tactical
Now: $44.96Was: $49.95Black Ash Tactical Defender Inner Waistband Kydex Holster for HK VP9SKHKP-22438-MNow: $44.96Was: $49.95 -
HK91, G3 Magazine - 15 Round - Alloy
H&K Heckler & Koch
$44.95Heckler and Koch HK91, G3, MSG90 15-Round Alloy Magazine Manufactured by Heckler & Koch and converted to 15-round capacity in the United States using a U.S.-made floorplate. Counts as one U.S.-made...HKP-22427$44.95 -
HK Mark 23 Thread Protector - Knurled - 16x1 RH
HKP HK Parts
$19.95HKP .45 ACP Thread Protector - Threaded 16x1 RH for HK Mark 23HKP-22286$19.95 -
HK USP45 Tactical MOD 1 Threaded Barrel Compensator
HKP HK Parts
$179.95HK Parts MOD 1 Compensator for Threaded Barrel: H&K USP Tactical .45 ACP The HK Parts MOD 1 compensator perfectly blends form and function, setting a new standard in muzzle control. Experience a...HKP-22262$179.95 -
HK MP5K Ultra Carbine Stock and Adapter
HKP HK Parts / Magpul
$312.95HK MP5K Magpul UCS Stock with Adapter The HK Parts UCS adapter and stock for the MP5K pairs our proven stock adapter with Magpul's UCS stock for a compact, adjustable configuration. The UCS stock...HKP-22198$312.95 -
HK CC9 Firing Pin Spring Retainer
H&K Heckler & Koch
$5.95H&K CC9 Firing Pin Spring Retainer Manufactured in Germany by H&K, this part secures the firing pin spring to the firing pin assembly, ensuring proper striker function during cycling.HKP-22139$5.95