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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HK416, MR556 Sling - Tactical - Black
H&K Heckler & Koch
$109.95H&K HK MR556/MR762/416/417 Tactical Sling - Black OEM HK German part. The tool is built into the HK sling hook. For the MR556 model, a sling adapter will be needed for the front attachment point as the MR556 lacks the ambi sling loop on the gas...HKP-00028$109.95 -
HK416, MR556 Gas Block - Slimline - Vented
H&K Heckler & Koch
$145.95Heckler and Koch Low Profile Complete Gas Block for HK MR556, HK416, HK German Factory slimline, low-profile gas block for the HK416 and HK MR556. This is the factory-correct gas block found on the MR556. Correct gas block to use with...HKP-02660$145.95 -
HK91, G3, HK33, HK53, HK93 Muzzle Protector Cap
H&K Heckler & Koch
$5.95H&K 93/53/33 & G3/91 5.56/.223 & 7.62x51/.308 Muzzle Protector Cap This cap covers the barrel end or flash hider to prevent debris, water, etc., from entering the barrel. The cap can be removed by hand or when the first round is fired with...HKP-13959$5.95 -
HK Bungee Single Point Sling - 1250mm Long
H&K Heckler & Koch
$109.95H&K Bungee Single Point Sling - 1250mm Long New factory HK German manufactured single point elastic "push/pull" bungee style sling. Includes the factory sling hook and is fully adjustable for the average sized mag to use. Will fit any HK application...HKP-17604$109.95 -
HK SL8, HK G36 Full Size Aftermarket Complete Bottom & Side Rail Set
USA
$69.95HK SL8/G36 Full Size Aftermarket Bottom & Side Rail Set Complete Comes with the bottom and 2 side rails (left and right) as well as the screws and allen wrench. Made of aircraft-grade aluminum and laser marked for easy number identification. New and...HKP-00633$69.95 -
Out Of Stock
HK91, G3 Barrel - 7.62 / .308 - 17.7" - Threaded 15x1 RH
RCM
$264.95RCM HK G3/91 (7.62x51/.308) Barrel - Threaded 15x1 RH Made by RCM to the highest tolerances and finest material available. Perfect for that HK build or to replace that shot-out barrel. Each barrel counts as 1 US-compliant part as a bonus. These are...HKP-01136$264.95 -
HK USPC, P2000 Magazine Floorplate - .357 SIG / .40 S&W - 12 Round - Rubberized
H&K Heckler & Koch
$18.95HK P2000/USPC .40 S&W Rubberized Floor Plate - Black Newer HK German production upgraded rubberized floor plate with finger rest. The older style plates were prone to breakage when dropped, this is the latest style that HK introduced to solve this...HKP-01556$18.95 -
HK USP Series Firing Pin Block Spring - Old Style
H&K Heckler & Koch
$9.95HK USP Series Old Style Firing Pin Block Spring In order to use the new firing pin block spring, you also have to upgrade the firing pin, firing pin block, as well as the firing pin block spring. HK part #214192 has been replaced with...HKP-02149$9.95 -
HK416, MR556 Takedown Pin - Front - A1 Style
H&K Heckler & Koch
$64.95H&K HK MR556 Front Lower Receiver Locking Pin With Spring Loaded Detent This part is the front (large) takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and...HKP-02663$64.95 -
On Sale
HK MP5 Receiver Flat - .40 S&W / 10mm
HKP HK Parts
Now: $194.95Was: $399.95MP5 40 & MP5 10mm Receiver Flat - USA The new and latest production with the weldment locations is already lasered and ready to go. This flat is the finest available for the MP5 40/10 family of firearms. Compatible With: MP5 .40 Cal MP5 10mm MP5 ...HKP-00767Now: $194.95Was: $399.95 -
HK MP5, HK94 Grip Adapter - K Style
HKP HK Parts
$49.95HK Vertical K Grip Adapter For HK MP5 & HK94 (Adapter Only) This is the adapter needed to add an MP5K K grip to your HK94, MP5, or clone.HKP-00175$49.95 -
HK MP5, HK33, HK53, HK93 Trigger Housing - SEF Navy - Polymer - Push Pin - 9mm, 5.56 / .223
H&K Heckler & Koch
$129.95H&K MP5 & 93/53/33 (9mm & 5.56/.223) SEF Navy Style Polymer Housing - Push Pin Upgrade your older SEF contoured trigger pack with this Navy Style polymer housing, designed to enhance the look and feel of your HK firearm. Specifications: Push...HKP-02462$129.95