The Geissele Automatics Super Modular rail MK5 was designed to be a lightweight modular rail system that also provides KeyMod attachment points in several locations along the length of the rail. The MK5 features an ergonomic design, with a flexible and modular set up procedure. The free floating design is strong and rigid, and overall one of the lightest weight systems on the market. Accessory rails are easy to install.

Specifications and Features:
Geissele Automatics AR-15 Free Float Rail 05-261S
13" Super Modular Rail
MK5 KeyMod attachment system
Desert Dirt Color
Height 2.3"
Inner Diameter 1.35"
Outer Diameter 2.11"
Installed Weight w/ barrel nut 12.80 oz

Fits:
AR-15 Rifles