SIG SAUER ALPHA MSR 34mm Coyote Scope Mount

Description

SIG SAUER ALPHA MSR 34mm Coyote Scope Mount

The SIG SAUER ALPHA MSR 34mm Scope Mount is an integral cantilever mount designed to secure a 34mm riflescope to an M1913 Picatinny rail. This SOA20017 configuration features a coyote finish, a 1.535-inch optical height and a 0 MOA cant. Its forward-offset geometry is suited to modern sporting rifles where proper eye relief often requires the optic to extend beyond the receiver’s conventional ring positions.

The mount uses precision-machined 7075-T6 construction for a strong foundation without unnecessary bulk. Steel M1913-style clamps create the rail interface, while SIG SAUER’s ring design is engineered to form securely around the scope maintube when installed correctly. Protective epoxy powder coating on the steel components helps resist oxidation, gun oils, common cleaning solutions and outdoor exposure.

Purpose-built cantilever geometry

A one-piece cantilever mount keeps both rings aligned on a common base and moves the riflescope forward while allowing the mount itself to remain attached to the upper receiver. This arrangement helps establish usable eye relief and a consistent head position on AR-style and other Picatinny-equipped platforms. The 1.535-inch height places the optic at a practical centerline for many modern rifle stocks and cheek positions.

The 0 MOA configuration maintains a level mounting orientation rather than adding built-in elevation. It is a straightforward choice for general-purpose optics and typical engagement distances where an inclined base is not required. Because rifles, optics and shooter fit vary, confirm that the height, cant and available rail space match the intended setup before installation.

Correct installation protects the optic

SIG SAUER specifies 65 inch-pounds for the 1/2-inch rail nut and 25 inch-pounds for the T15 Torx scope fasteners on ALPHA MSR mounts. Use a calibrated torque driver and tighten fasteners evenly in the sequence provided by the manufacturer. Excessive or uneven torque can damage an optic tube, distort the rings or compromise adjustment performance.

The rail surface, clamp and ring interiors should be clean and free of debris before assembly. Seat the mount fully against the rail slot, establish eye relief with the rifle safely unloaded, level the reticle and then apply the specified torque. Recheck mounting security after the initial range session and as part of normal equipment inspection.

Key specifications

• 34mm riflescope maintube compatibility
• Integral cantilever mount
• 1.535-inch optical height
• 0 MOA cant
• M1913 Picatinny attachment
• 7075-T6 construction with steel rail clamps
• Coyote finish
• Recommended rail-nut torque: 65 inch-pounds
• Recommended scope-fastener torque: 25 inch-pounds
• SIG SAUER part number SOA20017
• UPC 798681676927

Confirm fit before mounting

This model is specifically sized for scopes with a 34mm main tube. It is not interchangeable with a 30mm or one-inch mount, even when the products look similar. Verify the scope’s published maintube diameter and ensure the rifle provides an in-spec M1913 Picatinny rail with sufficient space for the complete mount. When properly matched and torqued, the ALPHA MSR provides a rigid, repeatable mounting solution for a 34mm optic on a modern rifle platform.