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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HK91, G3 Complete F/A Lower (SEF)
H&K Heckler & Koch
$369.95German G3 Surplus Lower Complete - Black Grip HK G3 SEF Steel Lower Complete. Each lower includes full auto trigger pack complete, selector lever, green grip, metal SEF grip frame, grip screw with screw washer. All of these parts are installed and ready...HKP-17653$369.95 -
Out Of Stock
HK UMP Barrel - .45 ACP - 7.87" - Threaded .578x28
HDPS
$349.95HK UMP .45 ACP Barrel - Threaded .578x28 HDPS UMP barrels are perfect for the USC to UMP conversions and for a replacement UMP .45 ACP barrel. They are considered by many to be the finest US-made barrel available. This barrel is the same length as a...HKP-20872$349.95 -
HK MP5, HK90 Series Pinned Hammer Strut
HKP HK Parts
$13.95HKP HK G3,91,PTR, 93,33 & MP5, 94 Pinned Hammer Strut New USA hammer strut for 90 series rifles and pistols. A perfect spare to have on hand. This is a pinned hammer spring shank. Perfect for your HK project or rebuild. Compatible With: HK trigger...HKP-20315$13.95 -
HK Single Point Quick Detach Sling - OD Green
NcSTAR
$29.95HK Single Point Sling in Green - Quick Detach Specifications: Composition: Heavy duty 1.5" wide adjustable nylon webbing and elastic bungee construction. Style: Bungee-type design for complete comfort and stability Sling loop is adjustable for length...HKP-19708$29.95 -
HK 3 Round Count Burst Wheel for 4 Position Trigger Packs
H&K Heckler & Koch
$127.95H&K 3 Round Count Burst Wheel For 4 Position Trigger PacksHKP-01639$127.95 -
HK416, MR556 Firing Pin
H&K Heckler & Koch
$54.95H&K HK MR556/416 Firing Pin New HK German manufactured. This is a great item to have on hand as the firing pin is one of the most abused components in the HK MR556 and HK 416 weapon systems. Compatible With: HK MR556 HK 416 HK CR556 HK...HKP-00045$54.95 -
HK416, MR556, MR762 Forward Assist Pin
H&K Heckler & Koch
$4.95H&K HK MR556/MR762/416 Forward Assist Pin Compatible With: HK MR556 HK 416 HK MR762HKP-02662$4.95 -
HK UMP, USC Lower Axle
H&K Heckler & Koch
$9.95HK UMP & USC Lower Axle - German 3 X lower axle pins are used for each trigger group or lower all pins are the same size, except the mag release axle on the USC model.HKP-01893$9.95 -
HK MP5 Tactical Handguard - Low Profile
HKP HK Parts
$99.95MP5 Tactical Handguard - Low Profile Fully adjustable for positive fitment and is built of high-strength aircraft-grade aluminum. Super lightweight and slim profile at less than 5.0 oz. Each handguard will accept your choice of Picatinny...HKP-02526$99.95 -
HK MP5, MP5K Magazine Release Paddle - Anti-Rattle Roller-Tip - 9mm
H&K Heckler & Koch
$64.95German HK MP5, MP5K Anti-Rattle Roller Tipped "Paddle" Magazine Release Factory German Paddle mag release for all 9mm MP5, MP5K HK builds. Our parts are made by HK in Germany and are factory-fresh production. Compatible With: MP5, 94, HK SP5 MP5K, SP89,...HKP-00117$64.95 -
Out Of Stock
HK MP5, HK416 Barrel - .22LR - 8.5" - Threaded 8x.75
RCM
$229.95RCM HK MP5 / 416 .22LR Pistol Barrel The first and only replacement barrel for the HK .22LR platforms—this is a game-changer! Previously, replacing the barrel meant the hassle of sending the receiver to H&K and waiting for the assembly to be...HKP-21403$229.95 -
GSG9 HK G36, HK G36K Folding Stock
GSG9
$115.00HK G36 Full Length Stock HK G36 10.5" Stock complete for G36 firearms. The G36/G36K stock is the longest stock option for the G36 family of firearms. For those that would like a shorter stock choose the G36C length stock. Each stock comes complete with...HKP-18219$115.00