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
Picatinny Optic Mount Shield - ACRO P2, C2 - S.W.O.R.D.S
Frost Defense
Now: $242.96Was: $269.95Aimpoint ACRO P-2, C-2 Optic Mount - S.W.O.R.D.S - Picatinny Mount The S.W.O.R.D.S Enhanced optic shield designed for Aimpoint ACRO P2/C2 red dot sights. This patent-pending mount system provides...HKP-22341-MNow: $242.96Was: $269.95 -
HK UMP, USC M-LOK Attachment Piece
HKP HK Parts
$29.95HKP HK UMP/USC M-LOK Attachment Piece Upgrade your UMP and USC with the HK Parts M-Lok attachment piece, designed to eliminate the hassle of snagging and shredding your knuckles on Picatinny rails...HKP-22249$29.95 -
HK MP5, MP5K Scope Tab - Billeted - Weldment
HKP HK Parts
$9.95HKP HK MP5/K Billeted Scope Tab - Weldment Billeted scope tab weldment for HK MP5, MP5K, and compatible clones. Provides a correct mounting point for optics. Compatible With:HKP-22063$9.95 -
On Sale
HK P30L Conversion Barrel - .40 S&W to 9mm - Threaded 1/2x28
RCM
Now: $193.46Was: $214.95RCM HK P30L .40 to 9mm Conversion Barrel - Threaded - 1/2x28HKP-21785Now: $193.46Was: $214.95 -
HK416A5, HK417 Universal Tool
H&K Heckler & Koch
$144.95Heckler and Koch Universal Tool for HK416A5, HK417 Genuine HK multi-tool designed for the HK416A5 and HK417. Suitable for both bench and field use, this factory tool provides the essential functions...HKP-21621$144.95 -
On Sale
HK416 Flash Hider - Birdcage Style - .22 LR
HKP HK Parts
Now: $25.47Was: $39.95HKP HK 416 .22 LR Flash Hider - A5 Birdcage Style Upgrade your 416 .22 pistol with a direct mount on flash hider featuring a sleek A5 birdcage style for a truly custom look. Built to last with the...HKP-21577Now: $25.47Was: $39.95 -
On Sale
B&T 1/2x28 Direct Thread to Hub Adapter
B&T Brugger & Thomet
Now: $80.96Was: $89.95B&T Direct Thread 1/2x28 Hub Adapter Convert any 1/2x28 RH threaded barrel to accept Hub devices with this direct fit adapter. Compatible With: HK MP5, MP5K, SP5, SP5KHKP-21506Now: $80.96Was: $89.95 -
HK MP5, SP5 Slimline Handguard - M-LOK
HKP HK Parts
$29.95HKP MP5, SP5 Slimline M-LOK Handguard Once a rare find after HK discontinued it, the classic slimline M-LOK handguard returns as a U.S-made update. This new version features a redesigned pattern for...HKP-21472$29.95 -
On Sale
HK VP9L Railok™ Threaded Barrel Compensator - BLEMISHED
HKP HK Parts
Now: $71.21Was: $189.95HK Parts Railok™ Mounting System Threaded Barrel Compensator: H&K VP9L COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOTHKP-21263-BNow: $71.21Was: $189.95 -
On Sale
HK416, MR556, G36 A5 Flash Hider - Threaded 1/2x28
HKP HK Parts
Now: $38.22Was: $59.95HKP (5.56/.223) HK 416C A5 Flash Hider - Threaded 1/2x28 Made from ordnance grade steel, heat treated, and melonited (nitride process) for maximum longevity. Machined correctly to reduce tuning fork...HKP-21342Now: $38.22Was: $59.95 -
Out Of Stock
HK MP5 to MP5SD Front End Conversion Kit
DTAC Dakota Tactical
$1,299.95Dakota Tactical HK MP5SD Front End Kit If you have wanted to convert that MP5 or SP5 to an SD but didn't know where to start, look no further. Our kit provides all necessary components (aside from...HKP-21318$1,299.95 -
On Sale
Gideon Shadow UMP Rear Sight, Complete
OMEGA
Now: $27.97Was: $39.95Omega Rear Sight Complete for HK UMP All the parts needed for the rear sight on a Gideon Shadow UMP style build. New USA made parts for your build. Will only work with Gideon Shadow. Locking screw...HKP-21266Now: $27.97Was: $39.95