HK Rifle / SMG Parts
Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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HK MP5, G3, HK93 Flat Trigger - Skeletonized
HKP HK Parts
$68.95HKP 90 Series Flat Trigger - Skeletonized - USA The HK Parts skeletonized flat trigger for 90 series firearms offers improved control, reduced weight, and a modern look. Precision-machined from ordnance-grade billet steel with a QPQ nitride finish for...HKP-21580$68.95 -
HK UMP, USC Extended Handguard
HKP HK Parts
$249.95HKP UMP/USC Extended Handguard - Black Cerakote The HK Parts UMP extended handguard is the ultimate choice for your UMP or USC. M-LOK attachment points and a robust picatinny rail on the extended section provide accessory mounting points for any loud-out...HKP-21679$249.95 -
HK MP5 Dual Folding Stabilizer - With Adapter - OD Green
HKP HK Parts / Strike Industries
$319.95Strike Industries Dual Folding Stabilizer with HKP MP5 Adapter The Strike Industries Dual Folding Stabilizer paired with the HKP MP5 picatinny adapter is one of the best options on the market for those looking for a light, compact folding stock...HKP-21655-M$319.95 -
Holosun 510 Series Open Reflex Sight - Picatinny Mount
Holosun
$354.95Holosun 510 Series Open Reflex Sight - Universal Picatinny Mount The HS510C is a versatile open reflex optic designed for long gun applications. HS510C is at home on carbines, PCCs, and shotguns due its durable design. HS510C features and aluminum...HKP-21656-M$354.95 -
HK UMP Enhanced Top Rail - Red
HKP HK Parts
$49.95HKP HK UMP Enhanced Top Rail - Red HK USC, UMP top receiver rail with hardware. The extended length allows the use of all optics that fit on a Picatinny rail. This unit has a contoured no snag design for ease of use and a beautiful fit. Includes: Each...HKP-20812$49.95 -
HK UMP, USC Hammer Spring - Right - US
USA
$9.95HK UMP & USC Right Side Hammer Spring For Lowers - USAHKP-19557$9.95 -
Out Of Stock
HK MP5 Magazine - 30 Round - .40 S&W, 10mm - Gray - Used
H&K Heckler & Koch
$159.95H&K Heckler & Koch 30 Round Magazine for HK MP5 .40/10mm - Gray - USED These magazines are no longer available, and we have just a few remaining units. Once they are gone, they are gone for good. These magazines are USED and are...HKP-01726$159.95 -
HK G36, HK SL8 Bolt Catch USF
USA
$14.95HK G36 & SL8 Bolt Catch On AR-15 systems this would be similar to a cam pin. Compatible With: G36, G36K, G36C Sl8 variantsHKP-19122$14.95 -
HK MP5 Dual Magazine Clamp Conversion Screw - G3 to MP5 Mags
HKP HK Parts
$2.95HKP Dual HK MP5 Magazine Clamp Conversion Screw This screw converts a HK91, G3, PTR dual magazine clamp (HKP-19634) into the correct length for use with an MP5 magazine. Includes: 1 screwHKP-20318$2.95 -
HK MP5K Slimline Handguard
H&K Heckler & Koch
$49.95H&K HK MP5K Slimline Forearm Used German military slimline forearm refinished in a black cerakote . Cut down to fit the MP5k. These are rare items only offered here at HK Parts. Each item is in good to excellent shape. Compatible With: MP5K,...HKP-20275$49.95 -
HK USP Lanyard Loop Insert Pin
H&K Heckler & Koch
$19.95HK USP Lanyard Loop Insert Pin Compatible With: HK USP 9mm HK USP 40 HK USP 45HKP-01930$19.95 -
Battle Sight - Rear
Troy Industries
$129.95Troy Industries Rear Battle Sight Durability and dead-on accuracy have made the Troy Industries Folding Battle Sight one of the best choices for Special Ops and tactical users worldwide. Easy to install and deploy, with no levers or springs to fumble...HKP-00032$129.95