New Arrivals
Shop the latest arrivals at HKP! We have a wide selection of new and innovative products for your HK MP5, HK SP5, HK P30, HK VP9, HK USP, and more. Whether you're looking for performance upgrades, cosmetic enhancements, or simply want to keep your H&K in top condition, we have you covered. Shop our new arrivals today and get the latest gear for your favorite HK firearm.
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HK MP5 A3 Retractable Buttstock Lever Rebuild Kit
H&K Heckler & Koch
$49.95Heckler and Koch Lever Rebuild Kit for A3 Retractable Buttstocks Rebuild kit for worn out or to complete A3 retractable stocks with metal back plate Compatible with: MP5 HK33 HK91, G3HKP-22547$49.95 -
HK MP5, SP5 Lower - ARC
AS Designs
$649.95AS Designs ARC Lower for HK MP5, SP5, HK94 The ASD ARC Lower allows for faster follow-up shots by resetting after each shot. This is a true drop-in trigger and housing assembly featuring SEMI, ARC, and SAFE selections. Installation is easy; simply...HKP-22545-M$649.95 -
HK MP5K, SP5K, SP89 Lower - ARC
AS Designs
$649.95AS Designs ARC Lower for HK MP5K, SP5K, SP89 The ASD ARC Lower allows for faster follow-up shots by resetting after each shot. This is a true drop-in trigger and housing assembly featuring SEMI, ARC, and SAFE selections. Installation is easy; simply...HKP-22546-M$649.95 -
On Sale
HK UMP, USC Optic Rail - Picatinny
H&K Heckler & Koch
Now: $17.95Was: $19.95HK UMP, USC Optic Rail - Picatinny Factory HK UMP and USC Picatinny machined aluminum optic rail with mounting hardware. Compatible With: HK UMP, USCHKP-22541Now: $17.95Was: $19.95 -
HK21E, HK11A1, HK11E Barrel With Grip - 17.7"
Michaels Machines
$1,478.95MM HK21E, HK11A1, HK11E Barrel - 17.7" Michael's Machines HK21E barrels are crafted in the US from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Barrels come complete, drop-in ready with a new factory flash hider and fully...HKP-22540$1,478.95 -
Out Of Stock
HK21 FMP Ultimate Build Kit- Matching Numbers - Complete RCM Barrel
FMP HK CONTRACT
$3,748.95HK21 Complete Build Kit- Matching Numbers HK Parts brings you another exhaustive parts kit. Our numbers-matching Ultimate HK21 parts kit includes everything you need to resurrect an iconic classic and hit the range for belt-fed action. Kit includes...HKP-22539$3,748.95 -
Out Of Stock
HK21 FMP Ultimate Build Kit - Matching Numbers - Complete MM Barrel
FMP HK CONTRACT
$4,148.95HK21 Ultimate Build Kit- Matching Numbers with Michael's Machines Complete Barrel HK Parts brings you another exhaustive parts kit. Our numbers-matching Ultimate HK21 parts kit includes everything you need to resurrect an iconic classic and hit the...HKP-22538$4,148.95 -
$120.95 -
HK MP5 Optic Rail - M-LOK - Midwest G2
MI Midwest Industries
$136.95Midwest Industries HK MP5 Optic Rail M-LOK Mil-Spec optic rail designed for the HK MP5 platform featuring M-LOK attachment points. Provides a stable mounting surface for optics and accessories on MP5 series submachine guns. This model is sought after for...HKP-22536$136.95 -
HK21, HK11 Barrel with Grip Handle and Flash Hider - 17.7" - MM
Michaels Machines
$1,478.95MM 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. Each barrel ships complete with a factory new flash hider and fully assembled handle comprised...HKP-22534$1,478.95 -
HK21, HK11 Barrel with Grip Handle and Flash Hider - 17.7"
RCM
$1,089.95HK21, HK11 Barrel with Grip Handle and Flash Hider - 17.7" RCM HK21 barrels are crafted from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Each barrel ships complete with a new factory flash hider and fully assembled handle...HKP-22533$1,089.95 -
HK91, G3 Barrel - FMP - 17.7" - Threaded 15x1
FMP HK CONTRACT
$89.95HK G3, 91 Barrel - 7.62/.308 - 17.7" - Threaded 15x1 Original 17.7" FMP G3 barrel threaded 15x1 RH. Portuguese manufactured to HK's military specifications. These surplus barrels are perfect for building a FMP G3 parts kit or as a replacement. Barrels...HKP-22532$89.95