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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On Sale
Optic Rail - 16 Slot - Peep Sight - USED
FN
Now: $28.95Was: $99.95FN Optic Rail w/ Peep Sight - 16 Slot - USED ONLY 1 UNIT LEFT - AS PICTURED NO MOUNTING SCREWS. Used 16-slot optic rail for FN firearms with a built in peep sight. THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS...HKP-99262Now: $28.95Was: $99.95 -
Out Of Stock
HK416, MR556 Bayonet Adapter - M27 Style
H&K Heckler & Koch
$61.95Heckler and Koch Bayonet Adapter HK416, MR556 for M27 Build OEM bayonet adapter for HK416 and MR556 rifles for M27-style builds. Mounts to the barrel assembly to accept a standard bayonet. Specifications Bayonet adapter only (roll pin sold...HKP-22191$61.95 -
On Sale
HK417, MR762 Extension Nut - Buffer Tube - Castle Receiver - BLEMISHED
H&K Heckler & Koch
Now: $20.95Was: $39.95H&K HK MR762/417 Castle Receiver Extension Nut For Buffer Tube - Black - BLEMISHED ONLY 2 UNITS AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES...HKP-16768-BNow: $20.95Was: $39.95 -
HK91, G3 Bolt Carrier - Full Auto - SURPLUS - FMP
H&K Heckler & Koch
$129.95Heckler and Koch's F/A Bolt Carrier for HK G3 and HK91 - FMP - SURPLUS One UNIT ONLY UNIT QUALITY MAY VARY - SEE PHOTOS FOR EXAMPLE OF CONDITION RANGE Used full-auto steel bolt carrier manufactured by FMP on original Heckler and Koch tooling. Compatible...HKP-22160$129.95 -
HK CC9 Slide Release Pin
H&K Heckler & Koch
$5.95H&K CC9 Slide Release Pin Genuine H&K CC9 slide release pin secures the slide release lever to the frame. Compatible With: HK CC9HKP-22121$5.95 -
On Sale
HK MP5 Trigger Housing - FBI 2 Position 0,1 Pictogram - .40 S&W, 10mm - USED - BLEMISHED
H&K Heckler & Koch
Now: $74.95Was: $128.95H&K MP5 40,10 2 Position (0,1 Pictogram) FBI Style Trigger Housing - USED - BLEMISHED CONDITION MAY VARY. SEE PHOTOS. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE...HKP-02696-BNow: $74.95Was: $128.95 -
On Sale
HK MP5 German 0,1,2 Burst Only Housing- Push Pin - USED - BLEMISHED
H&K Heckler & Koch
Now: $119.95Was: $179.95HK MP5 German 0,1,2 Burst Only Housing- Push Pin - USED - BLEMISHED CONDITION MAY VARY - SOLD INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL...HKP-01015-BNow: $119.95Was: $179.95 -
Out Of Stock
Century Arms AP53 Magazine - 30 Round
MKE
$54.95MKE 30 Round Magazine - Steel The MKE 30-Round Steel Magazine is a rugged, corrosion-resistant mag designed for the MKE 5.56 AP53 platform. Compatible With: Century Arms AP53 HK53 In-spec. clones and custom buildsHKP-22088$54.95 -
On Sale
HK MP5 Optic Mount - Raised Aimpoint ACRO - BLEMISHED
HKP HK Parts
Now: $89.95Was: $134.95HKP HK MP5 Raised Aimpoint ACRO Optic Mount - BLEMISHED INSTALLATION MARKINGS COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK Parts brings you one of the most...HKP-21666-BNow: $89.95Was: $134.95 -
HK MR762 A4 Handguard - Complete
H&K Heckler & Koch
$349.95Heckler and Koch HK MR762 A4 Complete Handguard Factory HK handguard with a 12 o’clock Picatinny rail and M-LOK slots at 3, 6, and 9 o’clock for mounting optics and accessories. Includes dual QD sling sockets for ambidextrous sling use...HKP-21972$349.95 -
HK G3/91 (7.62x51/.308) 15 Round Steel Magazine - Refinished
H&K Heckler & Koch
$84.95HK G3/91 (7.62x51/.308) 15 Round Steel Magazine - Refinished HK G3 factory steel 15-round magazine, expertly restored to its former glory. This magazine has been meticulously refinished inside and out, featuring a polished follower along with a fully...HKP-21922$84.95 -
On Sale
HK MP5 Magazine - 30 Round - TiN Coated - 9mm- BLEMISHED
H&K Heckler & Koch
Now: $109.95Was: $149.95H&K Heckler and Koch 30 Round 9mm Magazine for HK MP5 - TiN Coated - BLEMISHED ONLY 1 UNIT AVAILABLE SCRATCHES ON MAGAZINE BODY. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED...HKP-21643-BNow: $109.95Was: $149.95