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 UMP Folding Stock
HKP HK Parts
Now: $107.96Was: $119.95Folding Buttstock - GSG9 New UMP folding stock. This is a required part for the USC-UMP Conversion using the stock block B. Compatible With: UMP9 UMP40<HKP-19910Now: $107.96Was: $119.95 -
On Sale
HK91, G3 Extended Rifle Length Handguard - M-LOK
AIM
Now: $107.21Was: $129.95HK G3 EXTENDED RIFLE LENGTH HANDGUARD- M-LOK The most innovative and modular HK variant handguard on the market, our M-LOK HK forend can be used with all modern and traditional shooting techniques...HKP-18173Now: $107.21Was: $129.95 -
On Sale
HK33, HK53, HK93 Backplate - Painted - BLEMISHED
H&K Heckler & Koch
Now: $29.96Was: $59.95H&K 93/53/33 (5.56/.223) Backplate - Painted - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK...HKP-16254-BNow: $29.96Was: $59.95 -
On Sale
IMI 32 Round UZI Magazine - LIKE NEW
IMI
Now: $35.96Was: $44.95Uzi 32 Round 9mm Magazine - Like New - IMI Licensed - Mec-Gar Manufacture Made in Italy by the renowed Mec-Gar magazine manufacturing company with IMI Licensing. An all steel production and a blued...HKP-21231Now: $35.96Was: $44.95 -
HK VP9, VP9SK Cocking Aid Filler Left, Right Set
H&K Heckler & Koch
$19.95Cocking Aid Filler Piece Set For - HK VP9, VP9SK HK VP9/VP9SK Filler set replaces the cocking aids for a "flat" cocking area rather than raised cocking aids as comes standard on the HK VP9 pistol...HKP-17213$19.95 -
HK VP9, VP40, USP Series, P Series Magazine Spring - 10 Round
H&K Heckler & Koch
$6.95New German HK Magazine Spring For 10 Round Magazines A must-have part as magazine springs are high wear and a common replacement item. Compatible With: HK USP 9mmHKP-01428$6.95 -
HK416, MR556 Handguard - 11" - Extended - Quad Rail
H&K Heckler & Koch
$445.95HK MR556/416 Extended 11" Quad Rail This drop-in unit offers two full inches in extra length, not the standard 9" rail that comes with the HK 416/MR556, but an extended 11" rail that allows for a...HKP-01960$445.95 -
On Sale
HK Sling Hook - German - Used
H&K Heckler & Koch
Now: $2.21Was: $4.95Heckler and Koch Universal HK Sling Hook Original German universal HK sling hook for sling projects, repairs, or spare parts use. This factory HK sling hook is a hard-to-find component for authentic...HKP-99488Now: $2.21Was: $4.95 -
Out Of Stock
HK MP5 Mount - Trijicon MRO - Ultra Low Profile - Battle Steel
Botach Tactical
$69.95Botach Battle Steel HK Ultra-Low Profile Integrated Mounting Platforms for the Trijicon MRO Ultra-low-profile mount for HK MP5/HK33/HK53 firearms. Features a lower 1/3 cowitness for the Trijicon...HKP-19530$69.95 -
On Sale
Kershaw Cryo II 3 3/8" Knife
Kershaw
Now: $50.33Was: $78.95Kershaw Cryo II 3 3/8" Knife The award-winning Cryo is also available in a 20% larger size. Designed by Rick Hinderer, the Cryo II has a bigger 3.25-inch, assisted opening blade. This larger sized...HKP-20338Now: $50.33Was: $78.95 -
On Sale
HK VP9SK, P30SK Magazine with Finger Rest - 12 Round - 9mm
HKP HK Parts / Heckler & Koch
$62.96 - $69.95HK VP9SK & P30SK 9mm - 12 Round Magazine With Finger Rest This magazine has the same footprint, size, and overall length as the factory 10-round mag with pinky rest. Only, this offering gives you an...HKP-21078-M$62.96 - $69.95 -
Out Of Stock
HK416, MR556 Rear Diopter Sight Assembly - 10.5"
H&K Heckler & Koch
$188.95H&K HK MR556/416 10.5" Rear Diopter Sight Assembly This is the proper rear sight for use on all HK 416 10.5 uppers and firearms. This is also a great sight alternative for those who need a lower...HKP-01109$188.95