Geissele Automatics AR-15 Super Modular Rails MK4 M-LOK 10.5" Free Float Hand Guard Aluminum Black

Overview

The Geissele Automatics MK4 Super Modular Rail is a 10.5-inch free-float handguard for AR-15 platforms, constructed from 6061-T6 aluminum with a Type III hardcoat black anodized finish. Designed for rigidity and heat management, it features extensive venting and a proprietary 2.25-inch barrel nut. The rail provides versatile mounting options with M-LOK slots at the 3, 6, and 9 o'clock positions, as well as on the upper 45-degree quadrants. Additionally, it includes integrated Picatinny rail sections at the front of the 3, 6, and 9 o'clock positions and a full-length M1913 Picatinny rail along the top. The handguard has an inner diameter of 1.35 inches and an outer diameter of 2.11 inches, weighing approximately 12.74 ounces with the barrel nut installed.

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