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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Out Of Stock
HK MP5K Trigger Housing - 3 Position Navy Style - Clipped and Pinned - .40 S&W / 10mm
H&K Heckler & Koch
$0.00H&K MP5K 40/10 3 Position Navy Style Housing - Clipped & Pinned This lower housing is clipped and pinned for use on a semi-auto receiver shelves. For more information on our clipping and pinning, see our services section. We offer the best...HKP-15454$0.00 -
HK MP5 Parts Kit - .40 S&W - Pistol Build
HKP HK Parts
$1,674.95MP5 .40 Pistol Build Kit Complete German & USA Made Parts MP5 .40 parts kit complete with all the parts needed for an MP5 semi-auto pistol. Each kit comes with all 6 of the needed US made compliance parts to be legal as a pistol (N/A) rifle, or SBR...HKP-18405$1,674.95 -
On Sale
HK MP5F Bolt Group - Complete
H&K Heckler & Koch
Now: $2,448.95Was: $2,999.95H&K MP5 F Bolt Group Complete The bolt head, bolt carrier, and all F/A-related parts have been restricted by HK and will become increasingly harder to find. The F in the MP5F designation was added after the French Military asked HK to "beef"...HKP-00953Now: $2,448.95Was: $2,999.95 -
HK Trigger Box Full Auto
H&K Heckler & Koch
$175.95H&K Trigger Box Full Auto German HK used stripped HK trigger pack This item is for full auto SEF trigger pack internals or can be converted to semi. Not for use with ambidextrous trigger housings, or selectors.HKP-16247$175.95 -
On Sale
HK33 A2 Parts Kit
H&K Heckler & Koch
Now: $2,897.95Was: $3,489.95HK33 A2 Parts Kit - Used Surplus (Receiver Not Included) Genuine German HK33 A2 parts kit professionally de-milled in accordance with BATF specifications. This kit does not include a receiver. These kits consist of German-manufactured HK components and...HKP-00783Now: $2,897.95Was: $3,489.95 -
On Sale
Tikka 412, 512 Optic Mount, Aimpoint
B&T Brugger & Thomet
Now: $99.95Was: $199.95B&T TikKa Valmet 412 Scope Mount Specifications: Color: Black Height max: 11 mm Length max: 157 mm Length of top rail: 157 mm Material: Aluminum NATO Accessory Rails: 1 Part number: BT-10178 Treatment: Hardcoat anodized Weight: 78 g Width max: 25 mmHKP-17432Now: $99.95Was: $199.95 -
Out Of StockOn Sale
HK UMP Incomplete Lower Housing - BLEMISHED
GSG9
Now: $99.95Was: $174.95HK UMP Incomplete Lower Housing - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Incomplete lower housing for HK...HKP-99444Now: $99.95Was: $174.95 -
On Sale
B&T GHM9 SD Handguard - Incomplete - BLEMISHED
B&T Brugger & Thomet
Now: $188.95Was: $255.00B&T GHM9 SD Handguard - Incomplete - BLEMISHED MISSING BOTTOM PIECE COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Upgrade your GHM9 SD with this...HKP-99442Now: $188.95Was: $255.00 -
Out Of StockOn Sale
HK MP5, MP5K Magazine - 30-Round - LEO Marked - 9mm - Sterling, VA - BLEMISHED
KCI
Now: $38.95Was: $52.95HK MP5, MP5K Magazine - 30-Round - LEO Marked - 9mm - Ashburn, VA, - BLEMISHED MAGWELL DOESN'T LOCK PROPERLY - INSTALLATION MARKINGS COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED...HKP-21611-STE-VA-BNow: $38.95Was: $52.95 -
HK21 FMP Ultimate Build Kit- Matching Numbers - Complete RCM Barrel
FMP HK CONTRACT
$3,748.95HK21 Complete Build Kit- Matching Numbers HK Parts brings you another exhaustive parts kit. Our numbers-matching Ultimate HK21 parts kit includes everything you need to resurrect an iconic classic and hit the range for belt-fed action. Kit includes...HKP-22539$3,748.95 -
HK21 FMP Ultimate Build Kit - Matching Numbers - Complete MM Barrel
FMP HK CONTRACT
$4,148.95HK21 Ultimate Build Kit- Matching Numbers with Michael's Machines Complete Barrel HK Parts brings you another exhaustive parts kit. Our numbers-matching Ultimate HK21 parts kit includes everything you need to resurrect an iconic classic and hit the range...HKP-22538$4,148.95 -
HK21, HK11 Barrel with Grip Handle and Flash Hider - 17.7"
RCM
$1,089.95HK21, HK11 Barrel with Grip Handle and Flash Hider - 17.7" RCM HK21 barrels are crafted from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Each barrel ships complete with a new factory flash hider and fully assembled handle...HKP-22533$1,089.95