Weaver Thumbnut Flat Top Riser Rail – AR15 / M16

The Weaver Thumbnut Flat Top Riser Rail converts a flat-top AR-15 or M16 receiver into an elevated optics mounting platform. Its multiple-slot layout allows repeatable adjustment of eye relief for a range of optics and ring combinations. Constructed from aircraft-grade 6061-T6 aluminum with a black matte finish, the riser is engineered to provide a consistent mounting height. A thumbnut enables fast, tool-free installation and removal.

Key Specifications

• The riser fits AR-15 and M16 flat top receivers for optics mounting.
• Constructed from aircraft-grade 6061-T6 aluminum for structural stability.
• The finish is black matte for a non-reflective appearance.
• Includes multiple slots to set and fine-tune eye relief.
• Features a thumbnut for quick, tool-free attachment and detachment.
• Engineered to provide an optimal mounting height for ring and optic combinations.
• Listed weight is 0.5125 (unit not specified in source data).
• Listed shipping weight is 0.5125 (unit not specified in source data).
• Mounting style is a flat top riser rail compatible with standard optics and rings.

Designed for shooters who want a reliable, elevated mounting point for scopes and optic setups, this riser offers straightforward adjustment and fast installation. Its durable aluminum construction and tool-free thumbnut make it practical for range use and general field optics setups.