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Produced by Midwest Industries the HK417/MR762 receiver rod is the ultimate tool for barrel nut installs or removal. It is also designed to be used for muzzle device installs and will not damage the index pin.

MR762 Quad Rail

Complete forward assist for MR556 and MR762 rifles

Sear release rocker for MR556 and MR762 rifles

Complete Pistol grip for MR556 and MR762 rifles

5/8x24 Muzzle break for MR762 rifles.

PICATINNY Guard Complete for MR762

Forward assist clamping sleeve for MR556 and MR762 rifles

Forward assist pressure spring for MR556 and MR762 rifles

Bolt catch clamping sleeve for MR556 and MR762 rifles

Ejection port cover clamping sleeve for MR762 rifle

This kit includes a complete upper receiver/barrel assembly. This kit is only compatible with a MR762 lower . This closed system virtually eliminates the malfunctions that are common in direct-impingement gas systems, since hot carbon fouling and waste gasses are not propelled into the receiver area to operate the action. This is the same key feature critical to the success of the HK417 used by elite military and law enforcement customers. Upper will ship in HK Soft case. Kit will start shipping late Q4 2025

MR762 Cylindrical pin for stop pin

Adjustable Buttstock, FDE, for MR762/HK417

Locking screw for MR556 and MR762 MRS rail

This kit includes a complete upper receiver/barrel assembly. This kit is only compatible with a MR762 lower . This closed system virtually eliminates the malfunctions that are common in direct-impingement gas systems, since hot carbon fouling and waste gasses are not propelled into the receiver area to operate the action. This is the same key feature critical to the success of the HK417 used by elite military and law enforcement customers. Upper will ship in HK Soft case. Kit will start shipping late Q4 2025

Adjustable Buttstock, Black for MR762/HK417

Slimline Buttstock, FDE, for MR762/HK417

Backplate with QD cups for MR762 rifles