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 Facemount KeyMount (KeyMicro) - 360HD 1/2-28 FD
JMAC Customs
$124.95JMac Customs 360HD 1/2-28 FD Facemount KeyMount (KeyMicro) The JMac Customs 360HD is a high-performance muzzle device designed for superior durability, recoil mitigation, and compatibility with suppressors. Engineered with 360° ports for optimal...HKP-21825$124.95 -
On Sale
HK MP5, MP5K Magazine - 30 Round - LEO Marked - Titanium Nitride Coated - BLEMISHED
H&K Heckler & Koch
Now: $117.95Was: $159.95H&K HK MP5/MP5K 30 Round - LEO Marked Magazine - TiN Coated - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Elevate your collection with our TiN...HKP-21792-BNow: $117.95Was: $159.95 -
On Sale
HK93 Wide Handguard - Short - BLEMISHED
AC-Unity
Now: $49.95Was: $78.95AC-Unity HK93 Wide Handguard - Short - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. AC-Unity wide/short handguard, specifically designed for the...HKP-21638-BNow: $49.95Was: $78.95 -
HK VP40 Conversion Barrel - .40 S&W to 9mm - Threaded - 13.5x1
RCM
$214.95RCM HK VP40 to 9mm Conversion Barrel - Threaded - 13.5x1 This 9mm conversion barrel is a drop-in replacement that allows your VP40 to shoot the popular 9mm cartridge. Comes with a thread protector. Each barrel is made from ordnance-grade steel,...HKP-21790$214.95 -
HK91, G3, MP7, G36 Side Rail - Short
B&T Brugger & Thomet
$42.00B&T HK G3/HK91, G36, MP7 Side Rail - Short Swiss made B&T short side rail for the B&T quad rail handguard. Compatible With B&T Handguards For: HK91/G3 G36 MP7HKP-21775$42.00 -
B&T APC Stock or Brace Adapter - Picatinny - 9mm / 10mm / .40 S&W /. 45 ACP - No Hydraulic Buffer
B&T Brugger & Thomet
$160.00B&T Picatinny Brace/Stock Adapter - APC9/10/40/45 - Without Hydraulic Buffer The B&T alloy stock/brace adapter for the APC9/10/40/45 features a rear Picatinny interface giving the user a myriad of shouldering options. Compatible...HKP-21759$160.00 -
HK P30 MOD 1 Compensator - Threaded Barrel
HKP HK Parts
$179.95HKP HK P30 MOD 1 Compensator - Threaded Barrel The HK Parts MOD 1 compensator strikes a seamless balance of form and function. Users will immediately notice the reduction in muzzle flip and recoil, getting you back on target quicker. Each MOD 1 comp...HKP-21220$179.95 -
Out Of Stock
HK MP5/SP5/G36 Helmet Stock Cheek Support
B&T Brugger & Thomet
$168.00B&T HK MP5/SP5/G36 Helmet Stock Cheek Support B&T cheek support for B&T helmet stocks. Compatible With: HK MP5/MP5K HK SP5/SP5K HK G36HKP-21684$168.00 -
Out Of Stock
HK MP5K Receiver Flat - Smooth Top
HKP HK Parts
$129.95HKP HK MP5K Receiver Flat - Smooth Top The MP5K receiver flat has been meticulously crafted by the original German tool and die maker of the LSC receiver flat, utilizing factory original German prints and specifications. This receiver boasts a flat top,...HKP-21550$129.95 -
HK MP5 Parts Kit - Tactical Package
HKP HK Parts / Heckler & Koch
$2,199.95HKP MP5 Parts Kit Tactical package Vintage flavor with modern flare. Our team set out to strike a symbiotic balance of classic MP5 with modern accessories delivered at an affordable price. The result is a build kit comprised of vetted components...HKP-21495$2,199.95 -
On Sale
HK MP5, HK94, SP5 Binary Trigger Housing - Ambi - BFSIII - 9mm - INCOMPLETE - BLEMISHED
FA Franklin Armory
Now: $599.95Was: $849.95HK MP5, HK94, SP5 Binary Trigger Housing - Ambi - BFSIII - 9mm - INCOMPLETE - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED INCOMPLETE - MISSING GRIP COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN...HKP-20642-BNow: $599.95Was: $849.95 -
HK UMP Extended Top Rail - Red
HKP HK Parts
$59.95HKP HK UMP Extended Top Rail - Red Nearly an 1" longer than the standard length top rail. This picatinny top rail allows the user to add an eotech, aimpoint, acog, etc. Made in the USA from aluminum material and hard coat anodize in a beutiful Red...HKP-21049$59.95