ASK AN EXPERTDescription
- Lightweight design
- Maximum ventilation on the barrel
- M1913 picatinny rails in the 3, 6, 9, and 12 o'clock positions
- M-LOK slots in the 3, 6, and 9 o'clock positions and in the upper 45 quadrants
The Geissele's Super Modular MK4 Rail is used by the Federal Bureau of Investigation due to its strength, modularity, and M-LOK compatibility. It features M1913 picatinny rails in the 6 o'clock and 12 o'clock positions, as well as shorter M1913 picatinny rails in the front 3 o'clock and 9 o'clock positions.
The Picatinny rail on the bottom of the rail, or the 6 o'clock position, is elongated in this version to more comfortably accommodate accessories. Maximum venting for heat dissipation also dramatically reduces the rails overall weight, while maintaining its same strong and rigid platform. The MK4 M-LOK rail features M-LOK slots at the 3, 6 and 9 o'clock positions as well as the upper 45 degrees quadrants. This allows the user to keep the weight on the rail system down, while keeping the modularity and versatility to attach accessories as necessary.
