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 MR556 A4 Handguard - 10"
H&K Heckler & Koch
$259.95H&K HK MR556 A4 10" Handguard This 10" factory H&K MR556 A4 handguard offers a lightweight, free-floating design that enhances accuracy and provides rock-solid mounting for accessories. Made from high-strength aluminum, it features a slim profile...HKP-21934$259.95 -
HK21 Ammunition Belt with Starter Tab - DM6 - 200 Round
H&K Heckler & Koch
$114.95Heckler and Koch DM6 200 Round Belt with Starter Tab - for HK21 7.62x51/.308 Custom 200 round belt for HK21 and MG3 belt-fed rifles because 50 rounds just aren't enough! Compatible With: HK21HKP-21925$114.95 -
HK23, HK21, HK11 Starter Tab with 50 Links - 7.62x51 - M13
$24.95M13 Starter Tab with 50 M13 Links Designed for efficient ammunition handling, this set includes one M13 starter tab and 50 M13 disintegrating metallic links. Ideal for use with 7.62mm linked ammunition belts, providing reliable feeding and easy assembly...HKP-21904$24.95 -
On Sale
HK91, G3, PTR Bolt Head Complete - Used
H&K Heckler & Koch
Now: $78.95Was: $99.95German HK G3 & HK 91 & PTR Bolt Head Complete - Used German Date Coded Made in Germany. Each used bolt head is complete with all parts installed & 100% functional. Taken from live demilled German HK G3 rifles. Each bolt head is in good shape...HKP-21902Now: $78.95Was: $99.95 -
HK416A5, HK417 Universal Tool
H&K Heckler & Koch
$144.95Heckler and Koch Universal Tool for HK416A5, HK417 Genuine HK multi-tool designed for the HK416A5 and HK417. Suitable for both bench and field use, this factory tool provides the essential functions needed for routine maintenance and adjustments. Compact...HKP-21621$144.95 -
HK UMP, USC Sling Pin, Stock Block B
HKP HK Parts
$49.95HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin The original thumb screw version for all stock block B's.HKP-21504$49.95 -
HK MP5K Binary Trigger Group - Ambi - BFSIII - 9mm
FA Franklin Armory
$1,899.95Franklin Armory HK MP5K - BFSIII HK-C1 – Binary Trigger Group – Ambi 3 Position Housing In position 3 it will fire 1 round on pull and 1 round on release. With a 4.5 lb trigger pull, making this the fastest semi-automatic trigger on the...HKP-20933-M$1,899.95 -
HK SP5 Stock or Brace Adapter - AR M4 - QD Slint Attachment Point
HKP HK Parts
$159.95HKP HK SP5 AR, M4 Brace/Stock Adapter - QD Slint Attachment Point Each AR stock, brace adapter is made from a solid billet of CNC machined aircraft grade aluminum with QD sling attachment points and Cerakote finish for the best looking AR stock adapter...HKP-20725$159.95 -
HK416, MR556 Super Modular Handguard - 10.5" - M-LOK - DDC
Geissele
$468.95Geissele 10.5" M-LOK Handguard - DDC for HK416 The super modular rail HK416 MK15 M-LOK was designed to replace the standard rail on an HK416 or MR556 weapon platform. The rail system utilizes the stock HK barrel nut, but incorporates the strength,...HKP-20225$468.95 -
HK UMP, USC, G36 Handstop - Complete
HKP HK Parts
$49.95Hand Stop Complete - USA - UMP, USC & G36 Compatible With: USC UMP G36K G36CHKP-19236$49.95 -
HK91, G3, MP5 Sear Catch - Steel - New Build
H&K Heckler & Koch
$69.95Heckler & Koch's Sear Catch Release - Complete For HK 90 Series Trigger Packs New HK German manufacture. Sear/Catch complete with installed detent, spring, and roll pin. Compatible With: HK MP5, HK MP5K HK91 HK G3 HK33, HK53, HK93 PTR Other 90...HKP-01459$69.95 -
HK UMP 2 Position Complete Lower
H&K Heckler & Koch
$579.95New HK German 2 Position Lower Complete New German Heckler & Koch UMP Lower. 2 position settings (S,F). Each lower comes complete with all the factory internals. This item is ideal for the USC to UMP conversion or to keep as a spare. Compatible...HKP-19117$579.95