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 MP5 Retractable Stock - Cerakoted
MKE
$379.95MKE HK MP5 / AP5 Retractable Stock Transform your MP5-AP5 Clone with the essential upgrade that defines its iconic look. The A3 collapsible design delivers a customizable length of pull for unparalleled comfort and control. With a straight forward...HKP-21610-M$379.95 -
HK SL8 to G36 Stock Block - Conversion - Sling Pin - Picatinny Rail
HKP HK Parts
$149.95HKP HK SL8/G36 Conversion Stock Block with Picatinny Rail SL8 to G36 stock block with Picatinny rail offers superior adjustability for the stock of your choice, making it an excellent choice for SL8 conversion projects. Crafted from billet and cerakoted...HKP-21574-M$149.95 -
HK G3, M61 Barrel - 7.62 - 17.7" - Threaded 15x1 RH
RCM
$274.95RCM HK G3 & M61 (7.62x51/.308) Barrel - Threaded 15x1 RH Brand New Barrel for the Pre-G3 HK M61. The M61 was produced by H&K in Germany and has some aesthetic features that the final G3 rifles did not incorporate. A true piece of history can be...HKP-21353$274.95 -
HK MP5K & SP89 9mm SEF Navy Style Housing - Clipped & Pinned - LIKE NEW
H&K Heckler & Koch
$149.95H&K MP5K & SP89 9mm SEF Navy Style Housing - Clipped & Pinned - LIKE NEW Each housing is clipped and pinned and fitted for the semi auto shelf of the HK MP5K builds or SP89 firearms. Specifications: Made In Germany Clipped & Pinned Used...HKP-20617$149.95 -
MFI (5.56/.223) G28 Style Flash Hider - Threaded 1/2x28
MFI
$79.95MFI (5.56/.223) G28 Style Flash Hider - Threaded 1/2x28 The G28 2nd Gen flash hider features the latest style and is threaded 1/2x28. Constructed from ordnance-grade steel, it is finished with a semi-matte, mil-spec black oxide coating for enhanced...HKP-17941$79.95 -
Out Of Stock
HK VP40 Tactical Barrel - Threaded 14.5x1 - LH
H&K Heckler & Koch
$279.95H&K VP40 .40 S&W Tactical Barrel - Threaded 14.5x1 LH Precision made in Germany by HK, this barrel is crafted from cold hammer forged ordnance-grade steel. It represents the finest threaded factory barrel available for the HK VP40 or VP40...HKP-17994$279.95 -
HK33, HK53, HK93 Locking Piece # 7 - 55 Degree
PTR
$49.95PTR HK33, HK53, HK93 # 7 Locking Piece 55 Degree New US Made 55 Degree #7 Locking Piece for the HK 93, 33, C93 & V93 Rifles. Made in the USA from ordnance grade steel, heat treated and made to last. A perfect upgrade for your well used or...HKP-18470$49.95 -
Lee Sporting LS5 HK MP5K Complete Trigger Group Flat Trigger - Semi shelf
Lee Sporting / Magpul
$549.95Lee Sporting LS5 HK MP5K Complete Trigger Group Flat Trigger The LS5 trigger group from Lee Sporting is a definitive ergonomic upgrade over the OEM grip, boasting a weight reduction of 4.3oz compared to the original. This billet aluminum trigger group is...HKP-20484$549.95 -
HK VP9, VP9SK, VP40 Firing Pin Striker
HKP HK Parts
$39.95HKP HK VP9/VP9SK/VP40 Firing Pin Striker This firing pin fits all models of VP series pistols. Compatible With: HK VP9, VP9 tactical, VP9L, VP9 OR HK VP9SK VP40, VP40 tacticalHKP-20464$39.95 -
HK UMP Magazine Locking Plate - .45 ACP - US
USA
$6.95HK UMP .45 Magazine Locking Plate Made in the USAHKP-20136$6.95 -
HK USPC, USPC Tactical Barrel - .45 ACP - 4.47" - Threaded 16x1 LH
RCM
$250.00RCM HK USPC .45 ACP Barrel - Threaded 16x1 LH HK USPC .45 ACP & HK USPC Tactical .45 ACP barrel with 16x1 threaded design, compatible with various flash hiders and sound suppressors. Unlike the factory USPC Tactical .45 ACP barrel with metric 16x1...HKP-20129$250.00 -
HK416, MR556 M-LOK Compatible Handguard - 12.5"
H&K Heckler & Koch
$224.95H&K HK MR556/HK416 12.5" M-LOK Compatible Handguard Manufactured by HK from aircraft grade aluminum with a black hard coat anodized finish, this M-LOK handguard is designed for the Heckler & Koch MR556 & HK 416 rifles chambered in 5.56x45mm...HKP-19695$224.95