Discoveryopt® 30 mm Cantilever Scope Mount, 1.5″, 20 MOA

The Discoveryopt cantilever scope mount is designed for riflescopes with a 30 mm main tube and interfaces with a MIL-STD-1913 Picatinny rail. Its one-piece construction positions the optic farther forward to help establish the required eye relief. A fixed 20 MOA cant increases the usable elevation adjustment range for long-range shooting. The mount is CNC-machined from 6061-T6 aluminum and protected by a hard-anodized finish.

One-Piece Cantilever Construction

The lower ring halves and cantilever base form a single unit. The forward offset allows the riflescope to be positioned ahead of the base attachment point, making it easier to establish proper eye relief on firearms with limited mounting rail space. The mount is designed for MIL-STD-1913 Picatinny rails.

Fixed 20 MOA Cant

The base incorporates a fixed 20 MOA cant that angles the riflescope relative to the mounting rail. This shifts more of the optic's usable elevation adjustment range toward longer-range corrections and is suitable for setups requiring greater elevation travel than a neutral 0 MOA mount provides.

6061-T6 Aluminum Construction

The mount is CNC-machined from 6061-T6 aluminum alloy and protected by a hard-anodized finish for increased surface hardness and resistance to wear. Precision-machined ring interiors provide consistent contact with the riflescope tube. The manufacturer specifies coaxiality of ≤ 0.01 mm/m and resistance to shock loads of at least 1,000 G. The mount weighs approximately 156 g.

Specified Tightening Torques

Each ring cap is secured by 4 screws, while 3 mounting screws attach the base to the rail. The specified torque values are marked directly on the mount: 20 in-lb / approximately 2.3 Nm for the ring-cap screws and 30 in-lb / approximately 3.4 Nm for the base mounting screws.

Key Benefits:

• designed for 30 mm riflescope tubes
• compatible with MIL-STD-1913 Picatinny rails
• one-piece cantilever construction
• 1.5 in / 38.1 mm optic centerline height
• fixed 20 MOA cant
• increases usable elevation travel for long-range corrections
• 6061-T6 aluminum alloy
• CNC-machined construction
• hard-anodized finish
• precision-machined ring interiors
• 4 screws on each ring cap
• 3 base mounting screws
• ring-cap screw torque of 20 in-lb / approximately 2.3 Nm
• base mounting screw torque of 30 in-lb / approximately 3.4 Nm
• coaxiality of ≤ 0.01 mm/m
• shock resistance of at least 1,000 G
• approximately 156 g weight