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, Mark 23 .45 ACP, P30 .40 S&W Magazine Spring - HK 10 Round
H&K Heckler & Koch
$6.9510 Round HK USP/Mark 23 .45 ACP, P30 .40 S&W Magazine Spring A must-have spare part, as magazine springs are prone to wear and tear. Compatible With: HK USP .45 10 round HK USP .45 Tactical 10 round HK Mark 23 10 round HK 9mm & 40 cal P30...HKP-01675$6.95 -
HK UMP Lower Locking Pin
HKP HK Parts
$12.95HK UMP Lower Locking Pin, Push Pin For use with all HK UMP lowers & USC to UMP conversions. Made in the USA. This is the pin that holds the lower to the receiver. Compatible With: UMP USC Conversions TBT builds Omega Other builds that...HKP-18580$12.95 -
HK G3 Large Buffer Screw
H&K Heckler & Koch
$1.95HK G3 Large Buffer Screw This is the screw that screws in the back of the buffer. This is also needed to install the Magpul PRS2 stock. Used- in good, working condition.HKP-16981$1.95 -
HK MP5 Receiver Flat with Weldment Set - 9mm
HKP HK Parts
$219.95HKP HK MP5 9mm Receiver Flat with Weldment Set New MP5 receiver flat and weldment set combined for the best complete build option on the market. Made by the original German tool and die maker of the LSC receiver flat utilizing factory original German...HKP-20920$219.95 -
HK MP5, MP5K Flash Hider - 3 Lug - 9mm
HKP HK Parts
$99.95MP5, MP5K Flash Hider - 3-Lug - 9mm Installs & un-installs in seconds. New style HK flash hider with the latest style locking latch that sits flush when locked. Made in the USA from ordnance grade steel. Compatible With: HK MP5 HK MP5K HK...HKP-20170$99.95 -
HK MP5, HK91, G3, HK93, HK94, Clones Heckfire 2-Stage Trigger
$399.95Heckfire trigger for MP-5, HK 91/93/94, G3, Clones 2-stage trigger with around 5lb total pull. Drop-in to all lowers. The updated selector levers work for all lowers (you no longer need to tell us if it is an SEF or an AMBI lower) and they cover...HKP-20173$399.95 -
HK MP5K Handguard - Tri-Rail
MI Midwest Industries
$149.95MI HK MP5K Tri-Rail Handguard Features: Professional grade one-piece design Tri-Rail 1913 Picatinny on 3 sides for accessory attachment Simple installation, includes all tools Lightweight design Features two anti-rotation QD sling swivel...HKP-21486$149.95 -
HK VP9 Optic Plate - Holosun EPS - Red Dot Pistol Mount
HKP HK Parts
$49.95HKP HK VP9 Holosun EPS Optic Plate Each plate is CNC machined from a solid billet of ordnance grade steel, deburred, tumbled and Cerakoted for the ultimate in durability and appearance. Each unit comes with 2 X T20 steel Torx Plus screws for mounting the...HKP-21333$49.95 -
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Bundesadler
Zenith
$43.95Zenith 30 Round HK MP5 Bundesadler Magazine The Bundesadler laser-etched into a Zenith magazine. Limited run so get them while you can! Application of oil is recommended depending on climate. Features: Durable electro-plated black finish for exceptional...HKP-20913$43.95 -
HK MP5, HK33, HK53, HK93 Elbow Spring With Roller - Full Auto Trigger Pack - Used
H&K Heckler & Koch
$4.95H&K Full Auto Trigger Pack Elbow Spring With Roller - USED Used- Good shape. This item is a factory HK German replacement part.HKP-16241$4.95 -
PTR Muzzle Brake - Threaded 15x1 RH
PTR
$25.95PTR (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH Correct HK threading 15x1 right hand with HK style retaining spring to latch on the HK splined barrel. Made in the US and counts as one US 922r compliant part. Specifications: Threaded...HKP-02148$25.95 -
On Sale
HK P30 Series Extended Competition Magwell
HKP HK Parts
Now: $49.95Was: $74.95HK P30, P30S & P30L Extended Magwell, Jet funnel Kit - Competition The HK Parts manufactured Competition P30 extended magwell is CNC machined in the USA from billet aircraft grade aluminum that is hard coat anodized & Teflon coated for...HKP-17979Now: $49.95Was: $74.95