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
HK P30L Tactical Barrel - .40 S&W - 4.45" - Threaded 14.5x1 LH
RCM
Now: $190.95Was: $225.00RCM HK P30L .40 S&W Tactical Barrel - Threaded 14.5x1 LH Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest threaded replacement barrel for the HK P30L ...HKP-16220Now: $190.95Was: $225.00 -
On Sale
HK P2000 Tactical Barrel - .40 S&W - 4.28" - Threaded 9/16x24 RH
RCM
Now: $179.95Was: $225.00RCM HK P2000 .40 S&W Tactical Barrel - Threaded 9/16x24 RH Each P2000 .40 S&W tactical barrel is crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. It is the finest threaded replacement barrel available...HKP-16709Now: $179.95Was: $225.00 -
HK USP Compact Variant 4 Right Decock Control Lever
H&K Heckler & Koch
$34.95USPC - Decock Lever V4 - Decock Only Compatible with all USP Compact pistols and provides the V4 Decock ONLY (no safety function) when used with the Variant 3 & 4 Detent Plate. This is the correct lever for those who are "left-handed"...HKP-02264$34.95 -
HK USP Series Front Sight 7.4mm
H&K Heckler & Koch
$19.95H&K HK USP Series Front Sight 7.4mm Compatible With: HK USP 9mm HK USP 40 S&W HK USP 45 ACP HK USP Compact 9mm HK USP Compact 40 S&W HK USP Compact 357 SIG HK USP Compact 45 ACP HK USP Compact LEMHKP-16548$19.95 -
HK416, MR556, HK417, MR762 Buttstock Release Lever Pin
H&K Heckler & Koch
$6.95HK 416 & MR556 E1/E2 & HK 417, MR762 Stock Release Lever Pin Brand new factory German production. A must have spare part that should be replaced each time you remove or install the roll pin. Made in Germany.HKP-16860$6.95 -
$14.95 -
Out Of Stock
HK23E Locking Piece #20T - 70 Degree
H&K Heckler & Koch
$299.95HK23E 70 Degree 20T Locking Piece - German HK New This is hard to find as the HK23E or the parts for the HK23E are no longer in production.HKP-01451$299.95 -
HK91, G3 Enhanced Trigger Group - Match
H&K Heckler & Koch
$649.95HK German 91, PTR, C308 Match Trigger Group - Enhanced New! HK German-made semi-auto trigger group comes in .308 caliber already clipped & pinned. With the trigger pack not only being converted to semi-auto but the trigger pack has been...HKP-18358$649.95 -
HK91, G3 Buttstock Set with Backplate - Black - Used Good
H&K Heckler & Koch
$299.95Original G3, 91, PTR German Army Used Surplus Black Stock Set - Complete Factory HK German production. Each stock set is used but in perfect working order. Each set is in overall good condition. Most will clean up nicely with a little TLC...HKP-16205$299.95 -
On Sale
HK91, G3 Bolt Carrier - Semi Auto
PTR
Now: $199.95Was: $249.95New US Made HK91, HK G3, PTR-91 Bolt Carrier - Semi Auto Carrier This part is made to exact H&K specs and with the same material. PTR uses HK factory blueprints for manufacturing and quality control. Manufactured at the PTR facility here in the...HKP-01461Now: $199.95Was: $249.95 -
HK MP5 Locking Roller -4 - .40 S&W, 10mm
H&K Heckler & Koch
$19.95H&K Heckler and Koch HK German -4 roller for MP5 40/10 Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price listed is per roller. Order...HKP-00337$19.95 -
On Sale
HK MP5 Extractor - .40 S&W, 10mm
RCM
Now: $27.95Was: $34.95RCM US Made Extractor for HK MP5 .40 S&W and 10mm This part is made to the exact same specs as the HK German extractor final polish included. It is also a great upgrade for the clone CA and Vector builds.HKP-01969Now: $27.95Was: $34.95