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
HK UMP 2 Position Lower Grip Frame - FDE
HKP HK Parts
$149.95UMP - 2 Position Lower Grip Frame - FDE New UMP Lower. 2 position settings (S,F). Perfect for all your own internals. This item is ideal for the USC to UMP conversion or to keep as a spare. Compatible With: UMP .45 UMP .40 UMP 9mm USC conversions (NFA...$149.95 -
HK417, MR762, G28 Slim Line Retractable Buttstock
H&K Heckler & Koch
$86.95H&K HK MR762/417/G28 Slim Line Retractable Stock New From HK Germany the slim line retractable stock fits all MR762, HK 417 buffer tubes. Marked with the HK logo and issued on specialized HK 417, MR762 rifles. Compatible With: HK MR762 HK 417 HK...$86.95 -
HK UMP, G36 Sear Spring
H&K Heckler & Koch
$8.95HK UMP, USC, G36, & SL8 Sear Spring This part is used in conjunction with the sear in the trigger body of the lower.$8.95 -
HK UMP, USC Sight - Front - 9mm / .40 S&W / .45 ACP
H&K Heckler & Koch
$14.95New HK German Factory USC/UMP Front Sight This is a common wear or breakage part. This part is easy to swap out by just knocking out the roll pin, replacing it, and then re-inserting the roll pin. This is a common wear or breakage part. Compatible with...$14.95 -
HK 91, G3 Wood Stock w/ Enhanced Buffer Installed
H&K Heckler & Koch
$229.95HK German G3, 91, PTR Wood Stock With- Enhanced DMR Buffer Installed Each stock includes: Metal Backplate With Recoil Spring Installed Modified by our HK gunsmith and an enhanced heavy buffer has been installed Heavy Buffer Assembly Complete Wood Stock...$229.95 -
HK MP5 Semi Auto Carrier
RCM
$146.95RCM HK MP5 Semi Auto Carrier New RCM manufactured MP5, 94 F/A carrier with all current "F" style upgrades and tungsten filled for the best performance and the utmost reliability. Machined completely from billet ordnance grade steel to exact HK German...$146.95 -
HK416, MR556, HK417, MR762 Magazine Catch Spring
H&K Heckler & Koch
$9.95HK MR556, HK 416 & MR762 & 417 Magazine Catch Spring HK German manufacture. Compatible With: HK MR556 HK 416, M27 HK MR762 HK 417, G28 AR15, M4 & M16 firearms$9.95 -
HK416, MR556, HK417, MR762 Pistol Grip - V1
H&K Heckler & Koch
$79.95H&K 416/417 & MR556/762 V1 Battle Grip - Black This is a great upgrade for any AR15, M16/416 platform. New factory German HK manufacture. Compatible With: HK 416/MR556 HK 417/MR762 HK M27 HK G28 AR-15, M4, & M16 Platforms$79.95 -
HK MR556 Incomplete Upper Receiver
H&K Heckler & Koch
$449.95HK German Stripped HK MR556 Upper Receiver New factory German incomplete and unmarked MR556 upper receiver. Compatible With: HK MR556 HK MR223 HK 416 Do you need a matching lower for your build? STS416 A5 LOWER - Specialized Tactical...$449.95 -
HK UMP (9mm) 30 Round Magazine
H&K Heckler & Koch
$62.95HK German UMP 9mm 30 Round Factory Magazine The latest HK German production 30-round magazine is new and hard to find. Compatible With: UMP 9mm USC 9mm conversions Omega 9mm UMP/USC builds$62.95 -
HK MP5K, SP89, SP5K End Cap with Sling Swivel - 9mm - H&K
H&K Heckler & Koch
$99.95HK Factory German MP5K, SP-89, & SP5K End Cap With Sling Swivel Each pistol end cap is OEM HK German MP5K and MP5K-N and has the HK German factory buffer. Compatible With: MP5K SP89 SP5K MP5K-N MP5K-PDW MP5K Clone Or Other Custom Builds$99.95 -
MP5, SP5 - A2 Fixed Stock-Green
Michaels Machines
$199.95MP5 A2 Fixed Stock - USA - OD GREEN Each stock counts as one US made 922r compliant part. Simply the best US made MP5 stock featuring a rubberized backplate that reduces felt recoil as well as carrier abuse. Ideal for use with +P ammunition or MP5 40/10...$199.95