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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On Sale
HK USC , UMP Top Rail
Other
Now: $99.95Was: $149.95Top Rail - HK USC / UMP TommyBuilt anodized aluminum high rise top rail. Includes mounting hardware. Compatible With: HK UMP HK USC TMP UMP cloneHKP-20744Now: $99.95Was: $149.95 -
HK MP5, MP5K Flash Hider - 3-Lug - Titanium - 9mm
HKP HK Parts
$139.95HKP MP5 9mm Titanium Flash Hider - 3-Lug Easily attaches to the end of any factory specification 9mm 3 lugged barrel. This flash hider does not require the of threads as it attached to the 3 lug tip. Also a great addition for any of 3 lug barrels found...HKP-20223$139.95 -
MFI (5.56/.223) G28 Style Flash Hider - Threaded 1/2x28
MFI
$79.95MFI (5.56/.223) G28 Style Flash Hider - Threaded 1/2x28 The G28 2nd Gen flash hider features the latest style and is threaded 1/2x28. Constructed from ordnance-grade steel, it is finished with a semi-matte, mil-spec black oxide coating for enhanced...HKP-17941$79.95 -
HK USC, UMP Cocking Handle Assembly - Complete
HKP HK Parts
$149.95HKP Cocking Handle Assembly for HK USC, UMP Complete cocking handle assembly for HK USC and HK UMP platforms. US-made and built to factory-spec dimensions and includes all required components for proper function and replacement. Includes: Steel cocking...HKP-19155$149.95 -
HK UMP Magazine Floorplate - 9mm / .40 S&W / .45 ACP
HKP HK Parts
$7.95HKP HK UMP Floor Plate Compatible With: UMP .45 UMP .40 UMP 9mm These can become cracked or broken with use or drops onto hard surfaces. Made in the USA and counts as 1 US compliant part.HKP-17161$7.95 -
HK416, MR556, HK417, MR762 Brass Catcher
B&T Brugger & Thomet
$289.95B&T Picatinny Rail-Mount Brass Catcher This B&T brass catcher is quick and easy to install on to your factory picatinny mount equipped handguard. If your handguard does not have a picatinny rail to mount the brass catcher, you can simply...HKP-16899$289.95 -
Out Of Stock
HK416, MR556 Quad Rail w/ Flip Up Sight
H&K Heckler & Koch
$599.95HK 416A5 9" Quad Rail With Flip Up Front Sight New latest production HK 416A5, MR556 9" quad rail with integrated built in front flip up sight. Latest upgraded design with the laser markings for the adjustable gas block for suppressed and non-suppressed...HKP-17710$599.95 -
Out Of Stock
HK G36, SL8 Recoil Buffer - Factory
H&K Heckler & Koch
$20.95HK G36 Or SL8 Factory Recoil Buffer A critical spare part as these buffers deteriorate with usage and time.HKP-00290$20.95 -
HK G36, SL8, HK417, MR762 Bolt Head Ejector
H&K Heckler & Koch
$19.95H&K HK G36/SL8/MR762/417 Bolt Head Ejector Compatible With: HK MR762 HK 417 HK G36 HK SL8HKP-01868$19.95 -
HK G36, SL8 Cocking Handle Spring - US
$9.95G36 Cocking Handle Spring- US Made Compatible With: G36 All variants SL8 All variantsHKP-18369$9.95 -
HK USC Magazine Spring
H&K Heckler & Koch
$8.95H&K USC (.45 ACP) 10 Round Factory Magazine Spring Compatible With: HK USC 10 Round magazinesHKP-15284$8.95 -
HK MP5K Parts Kit - 9mm - Pistol Build
HKP HK Parts
$1,889.95MP5K, MP5K-N Style Pistol Build Kit Complete The finest USA and German-made parts for a complete parts kit for an MP5K, MP5K-N pistol build. Each Kit Includes The Following HK Parts: Barrel - 5.5" button rifled, 3-lugged & threaded 1/2x28 with...HKP-02604$1,889.95