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 MP5 Bolt Head with Locking Piece - .40 S&W, 10mm - BLEMISHED
H&K Heckler & Koch
Now: $419.96Was: $749.95Heckler and Koch Bolt Head with Locking Piece for HK MP5 .40 S&W and 10mm - BLEMISHED ONLY 7 UNITS AVAILABLE - CONDITION MAY VARY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS...HKP-99369Now: $419.96Was: $749.95 -
HK MP5, MP5K Cleaning Brush Rod - 9mm
H&K Heckler & Koch
$294.95HK MP5 Cleaning Brush Rod Factory cleaning rod designed specifically for 9mm MP5 platforms. An essential tool for ensuring optimal function and accuracy. Compatible With: HK MP5, SP5HKP-22494$294.95Out Of Stock
HK USP9 Expert Barrel
H&K Heckler & Koch
$564.95Heckler and Koch Barrel for USP9 Expert Manufactured from stHKP-22491$564.95
HK416, MR556 A4 Hammer Washer
H&K Heckler & Koch
$58.95Heckler and Koch Hammer Washer for HK MR556 OEM hammer washer for HK MR556 and HK416 rifles. Factory-spec replacement washer for the hammer assembly, ideal for repairs, rebuilds, or returning rifles...HKP-22434$58.95
HK CC9 Front Sight - Blacked Out
H&K Heckler & Koch
$23.95Heckler and Koch Blacked Out Front Sight for HK CC9 OEM steel front sight for the HK CC9 with a solid black-out face with no dot or insert. Compatible With: CCHKP-22425$23.95
HK416, MR556 Pistol Grip - Walnut
JMK
$78.95JMK HK416, MR556 pistol grip - Walnut The pistol grip by JMK is made from CNC-machined black walnut. After machining, the grip is dyed to ensure a uniform color and is finished with a catalyzed satin...HKP-22400-M$78.95On Sale
HK417, MR762 Handguard - 15" - Tropentarn
H&K Heckler & Koch
Now: $439.95Was: $488.95Heckler and Koch HK MR762 A4 Complete Handguard - Tropentarn - 15" 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...HKP-99326Now: $439.95Was: $488.95On Sale
HK21 Barrel - 17.7" - Threaded 15X1 - 7.62x51 / .308
Michaels Machines
Now: $1,070.96Was: $1,189.95MM HK21 Barrel - 17.7" - CHF Michael's Machines HK21 barrels are crafted in the US from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Barrels come stripped, requiring a flash...HKP-22332Now: $1,070.96Was: $1,189.95Out Of StockOn Sale
HK33K, HK53 Locking Piece #3 - 58 Degree - New Old Stock
H&K Heckler & Koch
Now: $1,449.95Was: $1,949.95Heckler and Koch HK53 Locking Piece #3 - 58 Degree - New Old Stock ONLY 2 UNITS AVAILABLE - AS PICTURED Priced forHKP-99315Now: $1,449.95Was: $1,949.95
HK MP5 Parts Kit - A3 Buttstock - 4 Position 3 Round Burst - .40 S&W, 10mm
H&K Heckler & Koch
$4,799.95H&K Heckler and Koch A3 4 Position 3 Round Burst Parts Kit for HK MP5 40,10 Genuine German HK MP5 .40 parts kits are becoming increasingly rare, and this setup is a prized find. Featuring the...HKP-22242$4,799.95
HK91, G3 Bolt Carrier - Full Auto - SURPLUS
H&K Heckler & Koch
$149.95Heckler and Koch Factory F/A Bolt Carrier for HK G3 and HK91 - SURPLUS UNIT QUALITY MAY VARY - SEE PHOTOS FOR EXAMPLE OF CONDITION RANGE Surplus factory H&K full-auto steel bolt carrier for the G3...HKP-22161$149.95On Sale
HK P2000 Magazine Body - 16 Round - RARE GPM
H&K Heckler & Koch
Now: $187.46Was: $300.95H&K P2000 GPM 16 Round Magazine Body - RARE PRICE IS PER MAGAZINE - SOLD INDIVIDUALLY. CONDITIONS VARY. PLEASE REFER TO PHOTOS AS THE MAGAZINE BODIES PICTURED ARE THE LAST 4 WE HAVE AVAILABLE.HKP-99190Now: $187.46Was: $300.95