HK416 / MR556 Receivers / Uppers

Ejection 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. 

H&K HK 416/417/MR556/MR762 Magazine Catch Retainer Ring Pin Compatible With: HK416 HK417 MR556 MR762

Enhanced 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 gloves.  Please Note:  This item is...

H&K HK MR556/MR762/416/417 Forward Assist Plunger Spring New HK German manufacture. Compatible With: HK MR556 HK 416 HK MR762 HK 417 HK G28 HK M27

HK MR556 & 416 Ejector Port Cover Pin Compatible With: HK MR556 HK 416

HK 416A5 - Stripped Upper Receiver This is the factory correct receiver for a true 416 build as it features the M16 relief cut in the bottom, rear portion of the receiver (shown in last pricture). Compatible With: HK 416 HK MR223 HK MR556 Need a...

H&K HK 416/417/MR556/MR762 Bridge For Lowers Compatible With: HK MR556 HK 416 HK MR762 HK 417

H&K HK MR556/416 Forward Assist Plunger Pin  

New HK German Partially Pre-Assembled MR556/MR223 Upper Receiver Each unit comes just as shown with the F/A (forward assist) assembly and ejection port door assembly installed from the HK factory.  Compatible With: HK MR556 HK MR223 HK...

H&K HK MR556 A4 Ambi Charging Handle Upgrade your MR556 or HK416-style rifle with this factory H&K ambidextrous charging handle, designed for smooth, reliable operation from either side. Built to Heckler & Koch’s exacting standards,...

AR-15 Commercial Buffer Tube Compatible With: HK MR556 & 416 All AR-15 style platforms Features: Made From T7 7075 Aircraft grade aluminum Made in the USA 6 Position Each features a highly polished inside tube Black Mil-spec triple hard coat...

H&K MR556 A4/416 Rear Takedown Pin Rear take down pin for MR556 and HK416 rifles.   Compatible With: HK MR556 HK 416