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 G36, UMP Handguard Handstop - BLEMISHED
OMEGA
Now: $21.95Was: $29.95HK G36, UMP Handguard Handstop - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK G36 hand stop kit. Complete with locking block and screw. Fits any...HKP-22512-BNow: $21.95Was: $29.95 -
On Sale
SP10 Lower - UMP Style - Rare
Special Weapons
Now: $399.95Was: $524.95Special Weapons SP10 Lower - UMP-Style - Rare UMP-style lower produced for the SP10 platform. Designed to replicate the UMP profile for SP10 builds. Hard-to-find component for SP10 projects and restorations. Compatible With: Special Weapons SP10 THIS...HKP-99331Now: $399.95Was: $524.95 -
On Sale
HK USP V5, V6, V7 Complete Bobbed Hammer - USED
H&K Heckler & Koch
Now: $39.95Was: $59.95HK USP V5, V6, V7 Complete Bobbed Hammer - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Compatible With: HK USP 9mm HK USP 40HKP-01934-USEDNow: $39.95Was: $59.95 -
On Sale
HK21, MG3, MG42 NOS Tripod with HK21 Adapters - Green
DISA (Madsen)
Now: $8,990.95Was: $9,989.95NOS MG3, MG42 ground Tripod with HK21 Adapters This is a Lafette-style ground mount, dated "3/63," manufactured by DISA (Madsen) for use with MG42, MG3, and MG53 machine guns. Original Olive-green paint throughout the tripod's body, and includes shoulder...HKP-99414Now: $8,990.95Was: $9,989.95 -
On Sale
M320 40MM Grenade Launcher Front Mounting Bracket for M4 - Incomplete - BLEMISHED
Other
Now: $63.95Was: $149.95M320 40MM Grenade Launcher Front Mounting Bracket for M4 - Incomplete - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED INCOMPLETE - MISSING RELEASE LEVER COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR...HKP-99407Now: $63.95Was: $149.95 -
On Sale
HK33, HK53, HK93 Extractor - USED
H&K Heckler & Koch
Now: $48.95Was: $67.95HK33, HK53, HK93 Extractor - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. A great replacement for your HK or clone. A high wear item that can become worn,...HKP-00189-USEDNow: $48.95Was: $67.95 -
On Sale
HK91, G3 Bolt Group - Complete - Semi-Auto - USED
H&K Heckler & Koch
Now: $559.95Was: $849.95Heckler and Koch Complete Semi-Auto Bolt Group for HK91, G3 - USED ONLY 1 UNIT AVAILABLE - AS PICTURED Complete factory German semi-automatic bolt group manufactured by Heckler and Koch for HK91 and G3 pattern rifles. Intended for replacement, reference,...HKP-99389Now: $559.95Was: $849.95 -
On Sale
HK UMP40 Bolt Group - Semi-Auto - 40 S&W - USED
H&K Heckler & Koch
Now: $729.95Was: $949.95Heckler and Koch HK UMP40 Bolt Group - Semi-Auto - 40 S&W - USED ONLY 3 UNITS AVAILABLE - VARYING CONDITION SHOWN - SOLD INDIVIDUALLY Complete factory HK bolt group for semi-automatic UMP firearms chambered in .40 S&W. Intended for replacement,...HKP-99388Now: $729.95Was: $949.95 -
On Sale
HK94 Trigger Group - 0,1 - USED
H&K Heckler & Koch
Now: $579.95Was: $799.95Heckler and Koch HK94 0,1 Trigger Group - USED ONLY 1 UNIT AVAILABLE - AS PICTURED Complete factory HK trigger group for the HK94 platform. This assembly includes the grip and trigger housing. Intended for replacement, reference, or build use on...HKP-99385Now: $579.95Was: $799.95 -
On Sale
HK MP5 Bolt Head with Locking Piece - .40 S&W, 10mm - BLEMISHED
H&K Heckler & Koch
Now: $559.95Was: $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. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED...HKP-99369Now: $559.95Was: $749.95 -
On Sale
HK UMP Barrel - 9mm - Threaded 1/2x28 RH with 3 Lug - BLEMISHED
OMEGA
Now: $345.95Was: $449.95HK UMP9 Barrel - Threaded 1/2x28 - 3-Lug 1 UNIT AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Factory-style barrel for HK UMP9 pattern...HKP-99367Now: $345.95Was: $449.95 -
On Sale
HK94 Barrel - Sight Tower - Non-Threaded - LIKE NEW
H&K Heckler & Koch
Now: $499.95Was: $599.95Heckler and Koch HK94 Barrel with Sight Tower - Non-Threaded - LIKE NEW ONLY 1 UNIT AVAILABLE Factory-style barrel designed for HK94 pattern firearms. This non-threaded barrel is suitable for replacement or build use and maintains the correct profile and...HKP-99366Now: $499.95Was: $599.95