SIG SAUER ALPHA MSR 34mm Scope Mount – Black

SIG SAUER ALPHA MSR 34mm 0-MOA Scope Mount

Mount a compatible 34mm riflescope to a 1913/Picatinny-equipped rifle with the SIG SAUER ALPHA MSR cantilever mount. This one-piece black mount combines a 34mm ring set and rail base in an integrated assembly, with a 0-MOA cant and 1.535-inch optical-center height. It is intended for shooters who need the larger 34mm tube diameter used by many tactical and precision-oriented optics. The exact model is manufacturer part number SOA20015.

Correct Fit for a 34mm Main Tube

The rings are sized for riflescopes with a 34mm main tube. Because ring diameter must match the optic, this mount is not interchangeable with 30mm or 1-inch models unless an optic manufacturer specifically approves an appropriate reducer. Confirm the scope’s published tube diameter before ordering. The unified mount design eliminates the need to select separate rings and a separate base, while maintaining consistent alignment between both rings.

A 1.535-inch height positions the optic at a practical level above a flat-top rail. The cantilevered arrangement moves the ring section forward of part of the rail attachment area, helping users establish proper eye relief while keeping the base on the receiver. Final compatibility still depends on the firearm, optic dimensions, objective-bell clearance, charging-handle access, and any installed backup sights or accessories.

0-MOA Picatinny Configuration

The ALPHA MSR attaches to a compatible Picatinny/1913 rail with steel 1913-style clamps. Its 0-MOA configuration holds the optic parallel to the rail rather than adding a built-in elevation angle. That makes it a straightforward general-purpose mounting option for users who do not need a canted base. A black powder-coated finish helps protect exposed surfaces from oxidation, routine gun oils, cleaning solutions, and outdoor conditions.

Key Specifications

• Model: SIG SAUER ALPHA MSR
• Scope tube diameter: 34mm
• One-piece cantilever mount
• Rail interface: 1913/Picatinny
• Cant: 0 MOA
• Optical-center/ring height: 1.535 inches
• Steel 1913-style rail clamps
• Black powder-coated finish
• Manufacturer part number: SOA20015
• UPC: 798681656011

Setup and Verification

Before installation, verify the scope’s 34mm tube, select receiver rail slots that provide proper eye relief, and make sure the optic will clear the rifle and surrounding accessories. Follow the latest SIG SAUER mounting instructions and torque specifications. Tighten rail and ring fasteners with the correct tool, work gradually in an even sequence, and avoid over-tightening the ring caps. Once mounted, check that the reticle is level, the eye box is comfortable in the intended shooting position, and every control remains accessible.

Recheck fastener security and zero after the initial range session and whenever the optic receives a significant impact. This product is the mount only; the riflescope, firearm, tools, and pictured accessories are not included.