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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Out Of Stock
HK416 Convex Buttstock - Wrench Included
H&K Heckler & Koch
$97.95H&K HK416 Convex Buttstock w/Wrench Factory-original H&K buttstock with convex buttpad and included tool. Compatible with HK416 rifles using MIL-SPEC buffer tubes (not included). Features: Ergonomic cheek weld Twist-off rubber buttpad with two...HKP-22025$97.95 -
HK21, HK21E, HK23, HK23E Double Frame Front Sight Base
H&K Heckler & Koch
$66.95H&K 21/21E/23/23E Double Frame Front Sight Base Original, unissued German double frame front sight bases. These have never been welded to a cocking tube and are perfect for completing or restoring your build with factory-spec parts. Compatible...HKP-21908$66.95 -
HK21E, HK23E Left Receiver Reinforcement Rail Weldment
H&K Heckler & Koch
$14.95H&K 21E/23E Left Receiver Reinforcement Rail Weldment Genuine German-made weldment for left-side receiver reinforcement rail. Precision-machined using the correct steel and milling for you HK21E or HK23E build. Compatible With: HK21E HK23EHKP-21907$14.95 -
HK91, G3, PTR Bolt Head - Complete - Used
EBO
$99.95EBO HK G3 & HK 91 & PTR Bolt Head Complete - Used Greek HK Contract Date Coded EBO bolt head is manufactured in Greece by Hellenic Arms Industry, utilizing HK tooling and prints. Since the 1980s, it has proven to be one of the best upgrades for...HKP-21903$99.95 -
On Sale
HK MP5, HK91, G3, HK33 Cocking Tube End Cap - Incomplete - BLEMISHED
H&K Heckler & Koch
Now: $21.95Was: $39.95H&K Cocking Tube End Cap/Dust Cap - BLEMISHED SOLD INDIVIDUALLY - VARYING CONDITION SHOWN INCOMPLETE COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This part...HKP-00099-BNow: $21.95Was: $39.95 -
On Sale
HK MP5SD Rubber Handguard - BLEMISHED
H&K Heckler & Koch
Now: $168.95Was: $229.95HK German MP5SD Rubberized Steel Handguard VARYING CONDITION SHOWN - SOLD INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Ideal for HK MP5SD 9mm...HKP-00136-BNow: $168.95Was: $229.95 -
HK MP5K 40/10 Stock or Brace Adapter
HKP HK Parts
$113.95HKP HK MP5K 40/10 Brace/Stock Adapter Easily attach your favorite A2 style stock to your MP5K 40/10 with this durable, precision-engineered adapter. Made in the US and available exclusively at HK Parts. Compatible with composite and wood A2 stocks...HKP-21869$113.95 -
HK21E, HK23E Rear Sight Base
H&K Heckler & Koch
$89.95H&K HK21E/23E Rear Sight Base Factory German HK21E/23E rear sight base ready to weld on your build. The rear sight base serves as the mounting point for the rear sight, providing stability and proper alignment for accuracy on your HK21E or HK23E. As...HKP-21849$89.95 -
HK MP5 Receiver Flat - 9mm - no Sling Clip
HKP HK Parts
$189.95HKP HK MP5 9mm Receiver Flat w/o Sling Clip The MP5 9mm receiver flat serves as the foundation for custom MP5 builds. This version does not include a sling clip cutout, offering flexibility for customization. Precision-engineered for compatibility with...HKP-21828$189.95 -
On Sale
HK MP5 Bolt Carrier Group - Complete - 9mm - IB Date Coded - Refinished
H&K Heckler & Koch
Now: $1,249.95Was: $2,629.95Heckler and Koch MP5 9mm Complete Bolt Carrier Group - Refinished This refinished complete bolt carrier group is the perfect spare or replacement for you HK MP5. Offering reliable performance and durability, it ensures your MP5 stays in top working...HKP-99025Now: $1,249.95Was: $2,629.95 -
HK MR556 Barrel - 5.56 / .223 - 16" - Complete Upper
H&K Heckler & Koch
$989.95HK MR556 16" Complete Upper Barrel Factory HK MR556 16" barrel, complete with a factory-installed barrel nut, gas block and flash hider. Every component is brand new and meticulously crafted, guaranteeing top-notch quality. This barrel is the ultimate...HKP-21805$989.95 -
Picatinny Optic Mount - 52mm - Skeleton - Aimpoint T Series
B&T Brugger & Thomet
$165.00B&T QD Mount "Skeleton" for Aimpoint T Series 52mm B&T universal Picatinny mount 52mm QD riser mount for the Aimpont T Series of optics. Quickly attach and detach your Aimpoint T Series optic with B&T's precision machined 52mm mount. The...HKP-21772$165.00