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 Barrel - 9mm - Threaded 1/2x28 with 3 Lug
B&T Brugger & Thomet
$378.95B&T HK MP5 9mm Barrel - Threaded 1/2x28 - 3-Lug New from B&T Switzerland, these MP5 barrels are cold hammer forged, fluted, and nitrided to exact HK specifications. B&T's close relationship with H&K and extensive history of...HKP-17955$378.95 -
Harris Engineering Bipod 6-9" - Fully Adjustable With Swivel
Harris Engineering
$149.95Harris Engineering Bipod 6-9" - Fully Adjustable With Swivel This part is manufactured using high-quality parts to ensure excellent function and sustainable use. It attaches to a sling swivel stud. Carrying your rifle with a sling or shooting off-hand is...HKP-00983$149.95 -
Out Of Stock
Gear Head Works Tailhook Mod 1 - FDE
Gear Head Works
$159.95Gear Head Works Tailhook Mod 1 - FDE We start with a solid piece of billet aluminum and meticulously machine every aspect for a part that is as nice to look at as it is to use. This version clamps to pistol buffer tubes or adapter spuds ranging from 1...HKP-19541$159.95 -
HK MP5 Rear Sight Set - Dented
H&K Heckler & Koch
$49.99Rear Sight with Hardware - Used Dented - MP5 German HK MP5 rear sight assembly with a dented 4 position drum. Condition will vary. Includes: HK rear sight Detent Spring windage screw Sight screw Washer Locking washer Compatible With: MP5 MAC-5 clones...HKP-19247$49.99 -
Out Of Stock
HK416, MR556 Handguard Picatinny Quad Rail - 9.75" - RAL8000
H&K Heckler & Koch
$489.95H&K HK MR556/416 Handguard Picatinny Quad Rail - 9.75" - RAL 8K Handguard with Picatinny quad rail profile on 3, 6 and 9 o'clock, STANAG 4694 profile on 12 o'clock. New HK German. Compatible With: All 14.5", 16.5", & 20" models HK MR556 HK...HKP-18553$489.95 -
HK416, MR556, HK417, MR762 Front Folding Sight - 28mm
H&K Heckler & Koch
$209.95H&K HK MR556/MR762/416/417 28mm Front Folding Sight This sight attaches directly to the front gas block of the HK416, MR556, or MR762, HK417. This sight is to be used with the proper (caliber and barrel length specific) rear fixed diopter sight for...HKP-00026$209.95 -
HK SL8, G36 Bolt Hold Open Lever - Extended
H&K Heckler & Koch
$69.95HK SL8 & G36 Extended Bolt Hold Open Lever New HK German SL8, G36, HK243 bolt hold open lever. A must have upgrade for your HK SL8, Sl8-G36 conversion or G36 firearm. The HK bolt hold open lever is a drop in replacement and requires zero gunsmithing...HKP-17719$69.95 -
On Sale
HK G36, SL8 Sling
H&K Heckler & Koch
Now: $39.95Was: $59.95HK German G36 & SL8 Tactical Sling - BlackHKP-02381Now: $39.95Was: $59.95 -
HKP HK G36/SL8 (5.56/.223) Aftermarket Side Rail Left Or Right
HKP HK Parts
$25.95G36 & HK SL8 Aftermarket Side Rail Left Or RightHKP-00286$25.95 -
HK USC (.45 ACP) Carbine Mag Release
H&K Heckler & Koch
$19.95H&K USC (.45 ACP) Carbine Mag Release This is a great replacement as they are prone to breakage & wear. Please Note: For those that have a USC with a bullet button and are moving to a free state and want to revert back to the...HKP-02196$19.95 -
HK91, G3 Fixed Stock Complete with Enhanced Heavy Buffer - Black
HKP HK Parts
$279.95New HK91, G3, PTR-91 U.S Made (PTR-91 Manufactured) Fixed Stock with Enhanced Buffer Installed Made from all German & U.S. made HK parts. This stock will fit any of the HK G3 & HK 91 & PTR rifles. This stock also counts as one U.S. compliant...HKP-18937$279.95 -
HK91, G3 Firing Pin Spring - Used
H&K Heckler & Koch
$4.95H&K 91/G3 (7.62x51/.308) Firing Pin Spring - Used This is a common repair and replacement item. Grab one for a spare, just in case.HKP-16711$4.95