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 SP5K Grip Module - SL
Magpul
$219.95 - $239.95Magpul HK SP5K SL Grip Module HK Parts brings a solution for those wanting to upgrade to the Magpul SL grip. This is a perfect option for those wanting improved ergonomics and a modern aesthetic. The pictograms are hand-painted to match the factory...HKP-20945-M$219.95 - $239.95 -
HK MP7 Piston Ring
H&K Heckler & Koch
$9.95HK German MP7A1 Piston Ring For Gas Piston New HK German MP7 piston ring. A high wear & tear item. Works on all HK MP7 models. Each ring is sold individually. 3X are needed for each piston. We suggest ordering 3 and swapping them all at the same time.HKP-17426$9.95 -
HK416, MR556, HK417, MR762 Detent Takedown Pin
H&K Heckler & Koch
$9.95Heckler and Koch HK417, HK MR556, HK417, HK MR762 Detent Takedown Pin Factory H&K takedown pin for MR556 A4. Compatible With: HK416, MR556 HK417, MR762HKP-02540$9.95 -
Out Of Stock
HK Barrel Retaining Pin - 5.15mm
H&K Heckler & Koch
$14.95H&K Barrel Retaining Pin - 5.15mm This is the barrel pin used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK barrel in the trunnion. Each pin is slightly oversized for...HKP-01662$14.95 -
HK MP5, MP5K Flash Hider - A2 Style - 3-Lug - 9mm
HKP HK Parts
$99.95MP5, MP5K Flash Hider - A2 Style - 3-Lug - 9mm Easily attaches to the end of any factory specification 9mm 3 lugged barrel. This flash hider does not require the of threads as it attached to the 3 lug tip. Also a great addition for any of 3 lug barrels...HKP-19520$99.95 -
HK91, G3 Cocking Handle - Rubberized
H&K Heckler & Koch
$32.95HK German G3 & HK 91 Rubberized Cocking Handle - Newest Style A genuine Heckler & Koch part. This is the latest style cocking handle that replaces the standard plastic style cocking handle that chips, cracks, and eventually falls off. This new...HKP-00509$32.95 -
HK MP5K Picatinny End Plate Adapter
MI Midwest Industries
$89.95MI HK MP5K 1913 Picatinny End Plate Adapter The Midwest Industries Picatinny end plate adapter opens up a myriad of off-the-shelf stock and brace options. The adapter installs in the same manner as the factory end cap with the factory push pins...HKP-21584$89.95 -
HK Lower Housing Clipping and Pinning Service - Polymer
HKP HK Parts
$99.95HK Clipped & Pinned Service - For Polymer Grip Frames We will clip and pin any "push pin" plastic housing for $99.95 each plus return shipping via USPS priority mail. Our technicians can perform the service on a customer supplied grip or we can clip...HKP-00923$99.95 -
HK91, G3 SEF Navy Style Trigger Housing - Push Pin - USED EXELLENT
H&K Heckler & Koch
$49.95H&K G3/91 (7.62x51/.308) SEF Navy Style Trigger Housing - Push Pin - USED EXELLENT German made Heckler & Koch grip housing comes in black polymer. Accepts standard SEF or 0,1 style trigger packs & SEF longer axled selector levers. Priced to...HKP-18335$49.95 -
AR-15 Buffer Tube Castle Nut
Ergo
$9.99Ergo AR-15 Castle Nut For Buffer Tubes - US Made Steel Castle-nut for AR buffer tubes fits both mil-spec and commercial buffer tubes alike. Compatible With: HK MR556 & 416 AR-15 style platformsHKP-02729$9.99 -
Picatinny - Dual Folding Adapter - Stabilizer
Strike Industries
$197.99Strike Dual Folding Adapter - Stabilizer This new stabilizer is the perfect option for the MP5 or MP5K platform that utilizes a 1913 picatinny back plate. For a quick and easy ambidextrous folding action. The Strike Dual Folding Adapter is a...HKP-21288$197.99 -
HK416, MR556, MR762 Bolt Catch Pin
H&K Heckler & Koch
$4.95Heckler and Koch HK MR556, HK MR762, and HK416 Bolt Catch Pin The factory roll pin is used to hold the bolt catch in place. Great to have on hand in the event this item becomes lost or damaged when doing maintenance Compatible With: HK416,...HKP-02677$4.95