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 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 Buffer Tube Castle Nut
H&K Heckler & Koch
$34.95H&K HK MR556/416 Castle Nut For Buffer Tube New HK German manufacture. This buffer tube castle nut will fit both mil-spec and commercial buffer tubes. All steel manufacture. With HK round tool attachment points as well as traditional wrench...HKP-15230$34.95 -
HK416, MR556 Sling - Tactical - Black
H&K Heckler & Koch
$109.95H&K HK MR556/MR762/416/417 Tactical Sling - Black OEM HK German part. The tool is built into the HK sling hook. For the MR556 model, a sling adapter will be needed for the front attachment point as the MR556 lacks the ambi sling loop on the gas...HKP-00028$109.95 -
HK91, G3, HK33, HK53, HK93 Muzzle Protector Cap
H&K Heckler & Koch
$5.95H&K 93/53/33 & G3/91 5.56/.223 & 7.62x51/.308 Muzzle Protector Cap This cap covers the barrel end or flash hider to prevent debris, water, etc., from entering the barrel. The cap can be removed by hand or when the first round is fired with...HKP-13959$5.95 -
HK MP5, MP5K Optic Mount - Raised - Picatinny
HKP HK Parts
$164.95HKP HK MP5/MP5K Raised Universal Optic Mount The HKP Raised Picatinny Optic Mount is designed for maximum versatility, providing a true universal mounting solution for red dot optics. Our optic mount utilizes the same footprint as the VP9 Optic...HKP-22219-M$164.95 -
HK SL8, HK G36 Full Size Aftermarket Complete Bottom & Side Rail Set
USA
$69.95HK SL8/G36 Full Size Aftermarket Bottom & Side Rail Set Complete Comes with the bottom and 2 side rails (left and right) as well as the screws and allen wrench. Made of aircraft-grade aluminum and laser marked for easy number identification. New and...HKP-00633$69.95 -
Out Of Stock
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 -
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 -
On Sale
HK MP5 Receiver Flat - .40 S&W / 10mm
HKP HK Parts
Now: $194.95Was: $399.95MP5 40 & MP5 10mm Receiver Flat - USA The new and latest production with the weldment locations is already lasered and ready to go. This flat is the finest available for the MP5 40/10 family of firearms. Compatible With: MP5 .40 Cal MP5 10mm MP5 ...HKP-00767Now: $194.95Was: $399.95 -
HK MP5, HK94 Grip Adapter - K Style
HKP HK Parts
$49.95HK Vertical K Grip Adapter For HK MP5 & HK94 (Adapter Only) This is the adapter needed to add an MP5K K grip to your HK94, MP5, or clone.HKP-00175$49.95 -
HK33, HK93 - Rear Sight Assembly Complete
H&K Heckler & Koch
$39.95HK 93 & HK33 Rear Sight Assembly Complete - Used This is the complete assembly as it comes from HK for a 556/223 firearm.HKP-00706$39.95 -
HK MP5, SP5K Barrel Flute Brush - 9mm
HKP HK Parts
$22.95HKP HK Cleaning Brush - 9mm - Barrel Flute Short, flexible brush sized for cleaning 9mm fluted barrels. Designed to reach the grooves and remove fouling without damaging the flute edges. Compatible With: HK MP5/K HK SP5/K HK SP89 HK94 HK34 Clones and...HKP-22315$22.95