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 Magazine Release Set
H&K Heckler & Koch
$184.95H&K Magazine Release Set This is the complete magazine release kit that includes both the paddle mag release and standard left-to-right mag release on your HK 9mm rifle or pistol build. Compatible With: MP5, MP5K style 9mm models Set...HKP-02402$184.95 -
HK Trigger Pack Ejector Lever Axle
H&K Heckler & Koch
$19.95H&K Trigger Pack Ejector Lever Axle HK German ejector lever axle pin for all HK trigger packs. This is the factory correct axle pin that holds the ejector lever in place in the trigger pack. Fits all SEF & Ambidextrous style HK trigger packs...HKP-01091$19.95 -
HK91, G3 Barrel - 7.62 / .308 - 17.7" - Threaded 15x1 RH
RCM
$264.95RCM HK G3/91 (7.62x51/.308) Barrel - Threaded 15x1 RH Made by RCM to the highest tolerances and finest material available. Perfect for that HK build or to replace that shot-out barrel. Each barrel counts as 1 US-compliant part as a bonus. These are...HKP-01136$264.95 -
HK MP5 Receiver Flat- 9mm
LSC
$239.95MP5 Receiver Flat - PTR/LSC New PTR 9mm Receiver Flat made on the original LSC tooling. This flat is considered by many to be the most sought-after HK flat available on the market and perfect for that HK custom build. This item is not considered an FFL...HKP-01431$239.95 -
HK416, MR556 Takedown Pin - Front - A1 Style
H&K Heckler & Koch
$64.95H&K HK MR556 Front Lower Receiver Locking Pin With Spring Loaded Detent This part is the front (large) takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and...HKP-02663$64.95 -
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
$4.95Heckler and Koch's Forward Assist Pin for HK416, HK MR556, and HK MR762 Compatible With: HK416, MR556 HK MR762HKP-02662$4.95 -
On Sale
HK91, G3, MP5 Ambidextrous Selector Lever - Right Side - Low Profile
HKP HK Parts
Now: $22.95Was: $39.95Low Profile, No Contact - Ambidextrous Selector Lever - Right Side This is the right side selector of the ambidextrous trigger packs that is low profile and does not interfere with the hand when the selector lever is in the fire, burst and F/A...HKP-17898Now: $22.95Was: $39.95 -
HK MP5, HK33, HK53, HK93, HK91, G3 Catch with Roller for SEF, Navy Trigger Packs - USED
H&K Heckler & Koch
$4.49Friction Sear-USED For SEF, Navy Trigger Packs hk335393, 91, G3, Used in excellent condition, HK German Friction Sear for SEF & Navy trigger packs. This item is also referred to as the catch with roller but more commonly called a sear.HKP-16197$4.49 -
HK MP5SD Tri- Rail Mount for Suppressor - 9mm
B&T Brugger & Thomet
$158.95B&T MP5SD 9mm Tri- Rail Mount for Suppressor Can accommodate suppressors up to 1.60 inches in overall diameter. Specifications: Color: Black Diameter max: 57.5 mm Length max: 44.5 mm Length of right rail: 30 mm Length of left rail: 30 mm Length of...HKP-16880$158.95 -
HK SL8, G36 Magazine Release Axle Pin
GSG9
$10.95HK G36 & SL8 Magazine Release Axle - USA Mag release axle for all G36 & SL8 models. A must-have spare part. Made in the USA. Compatible With: G36 G36K G36K SL8 Other custom G36 type buildsHKP-18255$10.95 -
HK MP5K, SP5K Trigger Housing - SEF Universal - 9mm
H&K Heckler & Koch
$199.95H&K Heckler and Koch 9mm SEF Trigger Housing for HK MP5K and HK SP5K A one size fits all approach for the MP5K and SP5K style semi-auto shelf. This is the best option for MP5K and SP5K receivers. Easily interchange the lower trigger group assembly...HKP-20557$199.95