Steiner T Series Cantilever Mount, 30mm, 40mm Height

The Steiner T Series Cantilever Mount for 30mm tubes, 40mm height (Steiner Optics part no. 5971) gives you a purpose-built mounting solution for AR-15 and other flattop platforms. Machined from rugged aluminum alloy, it is strong enough to hold zero under recoil while staying light on the rifle. The cantilever design extends the scope forward over the receiver, opening up the eye relief you need for a proper cheek weld and sight picture on a carbine-length AR without crowding the charging handle. At a 40mm mounting height, it sits taller than the 35mm option, giving extra clearance for large objective lenses or thick stock combs.

Key Specifications

• Sized for 30mm scope tubes.
• Set at a 40mm mounting height for extra objective lens and comb clearance.
• Cantilever design extends the scope forward for proper AR-platform eye relief.
• Machined from rugged aluminum alloy for a strong, lightweight mount.
• Built for AR-15 and flattop platforms.

Frequently Asked Questions

What tube diameter does this mount fit? It is sized for 30mm riflescope tubes.

Why choose the 40mm height over the 35mm option? The taller 40mm height gives extra clearance for a large objective lens or a thicker stock comb.

Buy the Steiner T Series Cantilever Mount, 30mm, 40mm Height

Get the eye relief your AR-platform rifle needs. Order the Steiner T Series Cantilever Mount through our scope mounts lineup from Steiner Optics, and our Lubbock, Texas team can help you pick the right height.