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 USP Extractor - Full Size - 9mm, .40 S&W
H&K Heckler & Koch
$54.95Heckler and Koch 9mm and .40 S&W Extractor for Full Size HK USP New HK German. A great spare and replacement item for your USP 9mm or USP .40 pistol. Compatible With:HKP-00324$54.95 -
On Sale
HK MP5 Receiver Flat - .40 S&W, 10mm
HKP HK Parts
Now: $146.21Was: $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...HKP-00767Now: $146.21Was: $399.95 -
On Sale
HK SP5 Folding Stock with HK Parts Adapter
B&T Brugger & Thomet
Now: $269.96Was: $299.95B&T Brugger and Thomet Folding Stock with HK Parts Adapter for HK SP5 B&T stock with a SP5 HK Parts Adapter. The HK Parts adapter is made from a solid billet of CNC machined aircraft grade aluminum...HKP-20663Now: $269.96Was: $299.95 -
HK USP Magazine Floorplate - .45 ACP - 10 Round - Standard
H&K Heckler & Koch
$10.95H&K 10 Round HK USP .45 ACP Standard Floor Plate Perfect for concealed carry as the flat floor plate has a lower profile. Compatible With:HKP-01194$10.95 -
HK45, HK45C, USP, USPC, P2000 Shaped Spring - Slide Release
H&K Heckler & Koch
$5.95HK Slide Release Spring This is a high-wear item, as it cannot be reused once damaged or removed. It must be replaced with a new spring. Compatible With: HK USP 9mm, .40 & .45HKP-01260$5.95 -
Out Of Stock
HK416A5, MR556, MR762 Rail Cover Set - RAL8000
H&K Heckler & Koch
$69.95H&K HK MR556/MR762/HK416 A5 Rail Cover Set - RAL 8K Brand new Heckler & Koch HK 416 A5 Style Picatinny rail covers made of high impact HK polymer. Each rail is equipped with a quick release tab &...HKP-17705$69.95 -
On Sale
HK MP5 1913 End Plate Adapter
MI Midwest Industries
Now: $76.46Was: $89.95MI HK MP5 1913 End Plate Adapter The Midwest Industries Picatinny end plate adapter opens up your stock and brace options to a myriad of off-the-shelf possibilities. The adapter installs in the same...HKP-21493Now: $76.46Was: $89.95 -
On Sale
HK45C, USPC Magazine Extension - +7 - .45 ACP
HKP HK Parts
$38.22 - $59.95HKP +7 .45 ACP Magazine Extension for HK 45C and HK USPC HK Parts magazine extension +7 adds 7 additional rounds to the HK45C, 8 round magazine. Each unit can then be fully assembled into a 15 round...HKP-21807-M$38.22 - $59.95 -
On Sale
HK P2000, USPC Magazine Extension - +5 - .40 S&W
HKP HK Parts
$31.84 - $49.95HKP +5 .40 S&W Magazine Extension for HK P2000 and HK USPC HK Parts magazine extension +5 adds 5 additional rounds to the HK P2000, 12 round magazine. It uses the existing mag body, spring, and...HKP-18644-M$31.84 - $49.95 -
HK416, MR556 Buffer Tube Wrench
HKP HK Parts
$29.95HK MR556 & HK416 Buffer Tube Wrench The perfect metric wrench to remove and install the MR556 & HK 416 castle nuts on the buffer tube. A perfect addition to have on hand for OTB or other HK buffer...HKP-17124$29.95 -
On Sale
HK33, HK53, HK93 Receiver Flat - Complete Weldment Set
HKP HK Parts
Now: $183.96Was: $229.95HK .223, 556, & 300 BLK Receiver Flat With Complete Weldment Set Combo Each flat and weldment set comes with 223/556/300BLK complete as a builders combo ready to assemble. Compatible With:HKP-00006Now: $183.96Was: $229.95 -
HK MP5SD Tri- Rail Mount for Suppressor - 9mm
B&T Brugger & Thomet
$158.95B&T MP5SD 9mm Tri- Rail Mount for Suppressor Can accommodate suppressors up to 1.60 inches in overall diameter. Specifications: Color: BHKP-16880$158.95