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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HK91, G3 Magazine - 20-Round - Aluminum - Refinished
H&K Heckler & Koch
$28.95Heckler and Koch Refinished 20-Round Aluminum Magazine for HK91, G3 Factory HK 20-round aluminum magazine for the HK91, G3, PTR, and other HK .308 pattern firearms. Each magazine starts as a...HKP-22877-M$28.95 -
Out Of Stock
HK MP5, SP5 ACR Folding Stock With Direct Fit Adapter
F5 MFG
$229.95HK MP5/SP5 ACR Folding Stock w/Adapter Upgrade your MP5 platform with the F5-ACR Stock. Precision machined from 6061 billet aluminum for unmatched durability. Built for law enforcement, personal...HKP-22253-M$229.95 -
HK MP5, MP5K Optic Mount, ACRO P-1, P-2 - Picatinny
HKP HK Parts
$98.95HKP HK MP5, MP5K Aimpoint ACRO Picatinny Sight Mount The HKP Aimpoint ACRO Picatinny mount is a rugged, low-profile solution for mounting your ACRO red dot sight. Designed to fit any firearm with a...HKP-22067$98.95 -
On Sale
HK MP5, MP5K Locking Piece - 100 Degree - Extra Low Impulse - .40 S&W, 10mm - Gunsmith Special - BLEMISHED
HKP HK Parts
Now: $7.46Was: $49.95HKP MP5/K 40/10 Locking Piece - Extra Low Impulse - Gunsmith Special - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED...HKP-18273-BNow: $7.46Was: $49.95 -
On Sale
HK MP5 Dual Folding Stabilizer with Adapter - .22LR
HKP HK Parts / Strike Industries
$187.46 - $202.46Strike Industries HK MP5 .22LR Dual Folding Stabilizer with Adapter The Strike Industries Dual Folding Stabilizer paired with the HKP MP5 .22LR picatinny adapter is one of the best options on the...HKP-21770-M$187.46 - $202.46 -
HK23E, HK13 Barrel - 5.56 / .223 - 17.7"
RCM
$699.95RCM HK23E Barrel RCM HK23E light profile barrels are made from mil-spec 41V50 CHF blanks that are fully salt bath nitrided for optimal wear and corrosion resistance. These barrels are the finest out...HKP-21837$699.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Pistol Grip Panel Kit
H&K Heckler & Koch
$72.99HK Heckler and Koch's Adaptive Pistol Grip Panel Kit with small and large sizes. The standard HK grip comes fitted with medium sized removable grip panels. This adaptive pistol grip kit supplies a...HKP-21802$72.99 -
Out Of Stock
HK Firearm Cleaning and Tuning Kit
SchleTek
$69.95SchleTek Firearm Cleaning & Tuning Kit The SchleTek Firearm Cleaning & Tuning Kit is an all-in-one solution for maintaining peak performance and reliability in your firearms. Designed for both...HKP-21732$69.95 -
Out Of Stock
B&T GHM9/45 Stock Telescopic
B&T Brugger & Thomet
$510.00B&T Stock Telescopic for GHM9/45 Factory B&T 3-position telescopic stock for the GHM9 and GHM45 platforms. Compatible With: B&T GHM9/GHM45HKP-21722$510.00 -
On Sale
HK SL8 to G36 Stock Block - Conversion - Sling Pin - Picatinny Rail
HKP HK Parts
Now: $95.59Was: $149.95HKP HK SL8/G36 Conversion Stock Block with Picatinny Rail SL8 to G36 stock block with Picatinny rail offers superior adjustability for the stock of your choice, making it an excellent choice for SL8...HKP-21574-MNow: $95.59Was: $149.95 -
On Sale
Vector Arms V51 Telescopic Stock
MKE
Now: $494.96Was: $549.95MKE V51 A3 Telescopic Stock: Factory new MKE stock professionally converted with the correct collapsing length to fit Vector V51 rifles and pistols. This V51 stock was modified with a heavy profile,...HKP-21469Now: $494.96Was: $549.95 -
On Sale
HK SP5 Stock - MOD2 - Strike Industries
HKP HK Parts / Strike Industries
Now: $83.78Was: $199.95Strike Industries HK SP5 Drop-In MOD2 Stock We pair our SP5 AR stock adpter with this Strike MOD2 stock to give you a drop-in SP5 stock. Give your build a modern look and added comfort and...HKP-21332-MNow: $83.78Was: $199.95