Geissele MK8 Super Mod Rail 15-inch M-LOK Black

Description

The Geissele Super Modular Rail (SMR) MK8 is a 15-inch free-float handguard designed for AR-15/M16/M4 platforms that prioritizes modularity and a rigid interface to the receiver. It adopts the Magpul M-LOK attachment system at the 3, 6 and 9 o’clock positions and in the upper 45-degree quadrants, allowing for versatile accessory placement without excess weight. The rail features extensive venting to reduce weight and promote heat dissipation while retaining structural rigidity along its length. Geissele provides a proprietary long barrel nut to increase surface contact where the rail interfaces with the receiver; installation requires a Geissele barrel nut wrench (sold separately).

Key Specifications

• The finish is Black.
• The length is 15 inches.
• The material is Aluminum.
• The interface uses M-LOK attachment points.
• The top rail type is Picatinny.
• This product fits AR-15/M16/M4 platform variants.
• The product type is a Railed Forend.
• The model designation is Super Modular (SMR MK8).
• The design emphasizes maximum venting for reduced weight and improved cooling.

Engineered for builders and shooters who value a stable, modular rail platform, the MK8 SMR provides a durable mounting surface for M-LOK accessories while preserving a slim, lightweight profile. Its vented, rigid design supports repeatable zero and consistent alignment with the receiver, making it a practical choice for precision-oriented and tactical AR-15 builds where accessory flexibility and structural integrity matter.