The MFT Extreme Duty Metal Back Up Sight (BUIS) Rear is a compact rear sight component designed around a minimalist profile and all-steel construction. Its low-profile configuration is intended to occupy minimal space on a compatible rail while allowing it to sit beneath or alongside other equipment.
The sight features a manual flip-up arm that allows the rear sight assembly to be positioned in either its stored or deployed configuration. Positive detents hold the sight in both the up and down positions, providing defined positions without requiring a complicated deployment mechanism.
A fixed 300-meter zero is incorporated into the rear sight configuration. The 02 rear peep aperture provides a relatively open sight picture intended for quick visual alignment. This aperture design keeps the rear sight profile straightforward while maintaining the familiar appearance of a conventional peep-style sight.
Windage adjustment is provided through a low-profile adjustment knob. This allows lateral positioning of the rear sight's point of aim without adding a large adjustment assembly that could interfere with surrounding equipment. The adjustment mechanism is integrated into the compact overall design.
The Extreme Duty rear sight is CNC machined entirely from steel, with no cast components used in its construction. This all-steel construction gives the component a solid, substantial build while maintaining the streamlined profile specified for the Extreme Duty series.
A nitride coating provides the sight with its black finish and an additional layer of surface protection. Corrosion-resistant hardware is used throughout the assembly, complementing the protective coating and supporting the sight's suitability for equipment exposed to regular handling and outdoor conditions.
The low-profile base is designed to tuck beneath compatible optics and forward-mounted rail equipment, helping conserve available rail space. Its slim configuration makes it less visually bulky than larger sight assemblies while maintaining the basic mechanical components required for a folding rear sight.
Installation uses a 1913 Picatinny rail interface, providing compatibility with equipment using that mounting standard. The manual operating system keeps the mechanism relatively straightforward, while the reduced hardware count is intended to minimize unnecessary complexity within the sight assembly.
The MFT Extreme Duty Metal BUIS Rear combines a CNC-machined steel body, nitride finish, corrosion-resistant hardware, flip-up mechanism, fixed 300-meter configuration, 02 peep aperture, and low-profile windage adjustment in a compact rear sight package.
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