Quickly Adapt to any Mission with a MK4 Federal Super Modular Rail

Adaptability and modularity are why the MK4 Super Modular Rail is the same rail used to fulfill contracts for the Federal Bureau of Investigations. Designed to meet the needs of operators and civilian shooters alike, the MK4 Federal Super Modular Rail features a full length integrated M1913 Picatinny rail on the top and an extended Picatinny rail at the 6 o'clock position. Slightly shorter Picatinny rails and M-Lok slots are located at the 3 o'clock and 9 o'clock positions. Additional M-Lok slots are located on the 45 degree upper quadrants. Weight reduction and heat dissipation are accomplished with generous vent openings while maintaining a strong and rigid platform. With reduced weight and optimal modularity, the MK4 Federal Super Modular Rail is adaptable for any mission.

Geissele Automatics MK4 Federal Super Modular Rail Specifications and Features

Geissele Item Number 05-430B

6061-T6 Aluminum Free Float Rail

Type 3 Hard Coat Anodized

Full Length M1913 Picatinny Rail at 12 o'clock

Extended M1913 Picatinny Rail at 6 o'clock

Short Length M1913 Picatinny Rail at 3 and 9 o'clock

M-LOK Compatible

Length 10"

Inner Diameter 1.35"

Out Diameter 2.11"

Weight 10.2 oz (11.8 oz with Barrel Nut

Geissele MK4-8 Style Barrel Nut

Black Finish

Fits:

• Mil-Spec M4 Upper Receivers
Barrel Nut Wrench and Gas Block Not Included