Geissele Automatics MK4 10" Federal Super Modular Rail (M-LOK) - 10.2 oz
The Geissele MK4 10" Federal Super Modular Rail is a free-float AR15/M4 handguard with an M-LOK accessory interface and an integrated M1913 Picatinny section on the forward underside (6 o’clock).
Constructed from aluminum with a Type 3 hardcoat anodized finish, this rail maintains a slim profile while providing ample ventilation and attachment points at the 3, 6, and 9 o'clock flats plus the upper 45-degree quadrants.