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 UMP, USC Lower Locking Pin
H&K Heckler & Koch
$36.95HK German UMP Lower Locking Pin For use with all HK UMP lowers and USC to UMP conversions. New HK German manufacture.HKP-00595$36.95 -
On Sale
HK51, PTR PDW Folding Stock
Choate
Now: $193.95Was: $228.95Choate PTR PDW (7.62x39) & (7.62x51 /.308) Folding Stock New HK Choate side folding stock complete with sling swivel, new German HK backplate, and ready to drop on your favorite HK rifle. No gunsmith is needed as this is an easy-to-do drop in stock...HKP-14348Now: $193.95Was: $228.95 -
Out Of Stock
HK MP5 Bolt Catch Lever - .40 S&W, 10mm
H&K Heckler & Koch
$74.95H&K Heckler & Koch Bolt Hold Open Lever - German HK - New for MP5 40, MP5 10 A great upgrade for the out-of-spec and sub-par quality part found on clone builds. Compatible With: MP5 40 MP5 10mm MP5 .357 Sig MP5 9 X 25 DillonHKP-01471$74.95 -
HK MP5 SEF Trigger Pack, Complete - Full Auto - .40 S&W, 10mm
H&K Heckler & Koch
$239.95HK German SEF Full Auto Trigger Pack Complete Factory HK German MP5 40 caliber full auto trigger pack is unmodified as it comes from HK. Our F/A trigger pack comes with a used factory German HK 40/10 caliber ejector lever and heavy hammer spring. Each...HKP-00151$239.95 -
On Sale
HK MP5, HK94, SP89, SP5K Brass Catcher
E&L MFG
Now: $67.95Was: $79.95E&L MFG MP5, 94, MP5K, SP89 Brass Catcher Rigid brass catchers are uniquely designed to conform to the shape of the firearm. Snaps on and off instantly and is made from strong, lightweight, black textured plastic. Each holds a minimum of 60 rounds...HKP-00845Now: $67.95Was: $79.95 -
On Sale
HK P30, P2000 SA/DA Spartan Hammer - V2
Lazy Wolf
Now: $125.95Was: $148.95Lazy Wolf HK P30 & P2000 SA/DA Spartan Hammer - V2 Transform the feel and look of your HK P30 or P2000 Single Action/Dual Action pistol with the Lazy Wolf Guns Skeletonized Spartan Hammer. Redesigned geometry yields a superiorly smooth and...HKP-22187-MNow: $125.95Was: $148.95 -
HK CC9 Magazine Floorplate and Locking Plate Set - 9mm - 12 Round - Extended
H&K Heckler & Koch
$29.95 - $37.95Heckler and Koch HK CC9 Extended Floor Plate and Locking Plate Set Factory HK replacement extended floor plate, locking plate, and spring set for CC9 12-round magazines. Finished in Cerakote, this kit is ideal for replacing worn or damaged magazine...HKP-22101-M$29.95 - $37.95 -
HK MR556 A4 Upper Receiver Kit - 16.5″ - 5.56 - M-LOK
H&K Heckler & Koch
$1,939.00H&K MR556 A4 16.5″ 5.56 M-LOK Upper Receiver Kit This kit includes a complete upper receiver/barrel assembly, allowing Mil-Spec 5.56mm AR-style rifles to be retrofitted to HK’s piston and pusher rod system. This system utilizes a piston...HKP-21909$1,939.00 -
On Sale
HK MP5 Pistol Stabilizing Brace - SBA5
SB Tactical
Now: $214.95Was: $264.95SB Tactical HK MP5 SBA5 Pistol Stabilizing Brace SB Tactical brace married with our MP5 end cap creates a true drop-in brace. With a 5-position adjustable length, this brace can be tailored to fit any body frame. Available exclusively here at HK...HKP-21672-MNow: $214.95Was: $264.95 -
On Sale
Glock 17 Gen 4 Rail Mount Compensator
HKP HK Parts
Now: $59.95Was: $179.95HKP Rail Mount Compensator for Glock 17 Gen 4 The perfect addition to your Glock 17 Gen 4 firearm with our low profile, aggressive rail mount compensator that flows with the lines of the firearm for a seamless addition. The Glock 17 Comp Weight™...HKP-21219Now: $59.95Was: $179.95 -
On Sale
HK VP9, VP40 Compensator - Quick Detach - Steel
HKP HK Parts
Now: $99.95Was: $199.95HK Parts HK VP9 Comp Weight™ Compensator - Quick Detach - Steel Easy on, easy off - Quick Detach technology. Doubles as a compensator as it directs pressure down on the frame to reduce recoil, and increases accuracy with less muzzle flip...HKP-18154Now: $99.95Was: $199.95 -
On Sale
HK MP5, SP5 Trigger Housing - AR - 9mm
Magpul
$239.95 - $254.95Magpul HK MP5/SP5 9mm AR Trigger Housing With our new MP5 AR style trigger housing you can have the desired Navy pictograph look with the versatile options of trigger guards to fit your shooting style and the option of storage inside the magpul grip...HKP-20727-M$239.95 - $254.95