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HK rear sight adjustment tool with red handle. Works to adjust any rear HK diopter sight.

Originally designed for the US military’s SOPMOD rifle enhancement program, the KAC M4 Folding Front Sight is a low-profile backup sighting solution that is designed to be attached to the top rail of a rifle’s handguard. When stowed in the folded position, the M4’s sight base extends back to envelope the front sight leaf on the right and left side, helping to protect it from damage.

Fits: MR556A1, MR762A1, HK416 (10,14.5, 16.5, 20 inch barrel lengths), HK417 (12, 16 inch barrel lengths). Use with rear sight 227657.

Front fixed sight for HK MR556, MR762A1, HK416 and other AR-15/M-16 platforms. Used with Rotary Rear Sight.

Concave Butt Cap for MR556 and MR762 rifles