HK416 / MR556 Series
Our extensive collection boasts a wide array of HK MR556 and HK 416 parts, including precision HK MR556 Barrels and durable HK 416 Stocks. Elevate your rifle's functionality with HK 416 Handguards and HK MR556 Triggers, designed for the discerning shooter seeking top-tier performance.
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HK Vertical Foregrip
H&K Heckler & Koch
$96.95H&K Vertical Foregrip (With Slide in for LM/LLM Switch) Compatible With: HK MP5/K HK MP5SDHKP-18465$96.95 -
HK416 Ejection Port Axle
H&K Heckler & Koch
$4.95Ejection Port Axle - Steel- HK 416 New HK USA manufacture for the HK 416 family of firearms. This is the axle that holds the ejection port cover in place on the upper receiver.HKP-20039$4.95 -
Out Of Stock
HK416, MR556 Receiver End Plate
H&K Heckler & Koch
$24.95HK 416, MR556 End Plate For Receiver & Buffer Tube New HK German manufacture. Compatible With: HK MR556 & HK 416 upper receiver/buffer tubesHKP-16603$24.95 -
Out Of Stock
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...HKP-02663$64.95 -
HK416, MR556 2-Stage Trigger
Geissele
$489.95Geissele Automatic's two stage trigger for the HK MR 556 rifle. The HK MR556 trigger is similar to Geissele's SSA with a 4.5 total pull weight. It can be used in both the HK 556 and semi-auto HK...HKP-16464$489.95 -
Out Of Stock
HK MR556 A1, A4 Bolt Group - Complete
H&K Heckler & Koch
$529.95H&K HK MR556A1 and A4 Complete Bolt Group Complete semi-auto bolt carrier group for MR556A1/A4 receivers. Bolt carriers will be marked ".223 Rem" or "5.56 x 45". Includes The Following: <HKP-02618$529.95 -
HK416, MR556 Flash Hider - Threaded 1/2x28 - German
H&K Heckler & Koch
$19.95H&K Heckler and Koch 5.56 / .223 Flash Hider - Threaded 1/2x28 This flash hider is threaded 1/2x28 for use on all HK416, HK MR556, and other AR-style applications. It is a great flash hider to use to...HKP-01404$19.95 -
On Sale
HK416A5, MR556 Enhanced Incomplete Trigger Guard
H&K Heckler & Koch
Now: $17.21Was: $39.95Enhanced HK Trigger Guard Upgrade Incomplete - A5 - HK416 & HK MR556 Upgrade your MR556, HK416 & CR556 to the latest gen HK416 A5 enhanced trigger guard. Enlarged trigger guard area to use with...HKP-19377Now: $17.21Was: $39.95 -
HK416, MR556, AR-15 Magazine - PMAG M3 - 40 Round
Magpul
$24.95Magpul PMAG 40 Round AR-15 5.56/.223 Magazine Latest M3 generation, NON-windowed PMAG (Polymer Magazine). Featuring a pop-off storage/dust cover that alleviates pressure from the magazine feed lips,...HKP-16699$24.95 -
On Sale
HK MP5, MP5K Muzzle Device - KeyMod Suppressor Compatible- Threaded 1/2x28 - 9mm
JMAC Customs
Now: $77.95Was: $99.95JMAC HK MP5 9mm Muzzle Device - Compatible With KeyMod Suppressors - Threaded 1/2x28 The360HD is the latest evolution in JMac's Custom's™ Recoil Reduction Device™ (RRD)family of muzzle brakes,...HKP-21256Now: $77.95Was: $99.95 -
HK Single Point Quick Detach Sling - OD Green
NcSTAR
$29.95HK Single Point Sling in Green - Quick Detach Specifications: Composition: Heavy duty 1.5" wide adjustable nylon webbing and elastic bungee construction. Style: Bungee-type design for complete...HKP-19708$29.95 -
HK MR556 Incomplete Upper Receiver
H&K Heckler & Koch
$440.95HK German Stripped HK MR556 Upper Receiver New factory German incomplete and unmarked MR556 upper receiver. Compatible With: HK MHKP-02615$440.95