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 VP9 Barrel - 9mm - Threaded 1/2x28
SilencerCo
$189.95SilencerCo HK VP9 9mm Barrel - Threaded 1/2x28 High-quality components and precise manufacturing make SilencerCo parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years...HKP-19434$189.95 -
On Sale
HK45, HK45C Bench Mat
HKP HK Parts
Now: $10.95Was: $13.95HKP HK 45/45C Bench Mat This isn't your ordinary gun cleaning mat! Show your pride for your HK45, HK45C firearm while using this high quality neoprene rubber backed and cloth top gun cleaning mat to protect your gun bench, desk, kitchen table, or...HKP-17171Now: $10.95Was: $13.95 -
HK Mark 23 Thread Protector - 16x1 RH
H&K Heckler & Koch
$40.99New factory HK Mark 23 SOCOM thread protector This is the only thread protector that HK offers that will fit the HK Mark 23 Pistol. This is a hard-to-find item and a must-have for all MK23 Owners. Compatible With: All H&K Mark 23/ SOCOM barrels...HKP-00293$40.99 -
On Sale
HK MP5, HK94, SP5K Magazine Floorplate - 9mm - US - BLEMISHED
USA
Now: $5.95Was: $9.95MP5 & MP5K 9mm Magazine Floor Plate - BLEMISHED VARYING CONDITION - SOLD INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART PRICE IS PER MAGAZINE Floorplate - SOLD...HKP-17507-BNow: $5.95Was: $9.95 -
HK Mark 23, SOCOM Magazine - 10 Round - .45 ACP
H&K Heckler & Koch
$59.00HK Mark23 SOCOM 10 Round Magazine Fits all HK Mark 23 and or Socom pistols.HKP-01226-M$59.00 -
Out Of Stock
HK MP5, MP5K Optic Mount - 138mm - Low Profile - Extended Picatinny
B&T Brugger & Thomet
$159.95B&T MP5, MP5K Low Profile Picatinny Mount Specifications: Color: Black Height max: 23.5 mm Length max: 138 mm Length of top rail: 138 mm Material: Aluminum NATO Accessory Rails: 1 weaver type style rail Part number: BT-21241 Treatment:...HKP-16876$159.95 -
On Sale
HK P30 International Holster - Comp Carry
Comp-Tac
Now: $67.95Was: $79.95Comp-Tac HK P30 International Comp Carry Holster This custom made Comp-Tac International OWB holster for your HK pistol that allows you to have the Rail Mount Compensator, Comp Weight, or Match Weight installed. Manufactured by the best holster company...HKP-20018-MNow: $67.95Was: $79.95 -
On Sale
HK MP5, SP5 Handguard - OD Green
HKP HK Parts
Now: $31.95Was: $39.95HKP HK MP5, SP5 Handguard - OD Green USA MP5 O.D green handguard is also known as the tropical wide forearm. Now you can further customize your MP5/ SP5 with this new color grip and, best of all, it counts as 1 U.S complaint part for the 922r. This...HKP-20593Now: $31.95Was: $39.95 -
HK416, MR556, HK417, MR762 Buffer Retaining Pin
H&K Heckler & Koch
$15.95Heckler and Koch HK MR556, HK MR762, 416/417 Buffer Retaining Pin New HK German proprietary HK designed buffer pin unique to the HK 416 and MR 556 series. Compatible With: HK416, MR556 HK MR762 HK M27HKP-02544$15.95 -
Out Of Stock
HK MP5SD Sealing Ring
H&K Heckler & Koch
$29.95Heckler and Koch Sealing Ring for HK MP5SD Each HK MP5SD sealing ring is the sealing gasket that seals the SD suppressor against the trunnion on factory HK MP5SD's or factory correct SD conversions. This is a typical wear item as they do degrade and...HKP-00142$29.95 -
On Sale
HK MP5, SP5K Barrel Flute Brush - 9mm
HKP HK Parts
Now: $17.95Was: $22.95HKP HK Cleaning Brush - 9mm - Barrel Flute Short, flexible brush sized for cleaning 9mm fluted barrels. Designed to reach the grooves and remove fouling without damaging the flute edges. Compatible With: HK MP5/K HK SP5/K HK...HKP-22315Now: $17.95Was: $22.95 -
HK SL8, G36 Magazine Release - Extended
H&K Heckler & Koch
$19.95Heckler and Koch Oversized Extended Magazine Release for HK SL8 and HK G36 New HK German HK SL8, HK G36, HK243 extended mag release. A must have upgrade for your HK SL8, SL8 to G36 conversion or G36 firearm. The HK extended magazine release is a...HKP-17720$19.95