Geissele MK4 Federal 10″ Mlok Rail

The Super Modular MK4 Federal Rail is the exact model that was designed and issued to the FBI Hostage Rescue Team. Features a Full Length Picatinny rail at the 12 o’oclock position and shorter 1913 rails at the 3, 6, and 9 o’clock locations. M-Lok compatible slots at 3,6,9 and also at the 45 degree locations from top. Low weight and super modularity makes this rail the top choice for professional use. Includes barrel nut but you need a barrel nut wrench unless you already have one. These rails are designed to work with mil-spec M4 receivers. They may or may not fit other AR15 type receivers.

• HEIGHT: 2.30″
• COLOR: Black, DDC, Gray or OD Green
• MATERIAL: 6061-T6
• FINISH: Type 3 Hardcoat Anodized
• LENGTH: 10″
• INNER DIAMETER: 1.35″
• OUTER DIAMETER: 2.11″
• WEIGHT: 10.2oz (11.8oz w/ barrel nut)