SIG SAUER TANGO-MSR 3-18×50 34mm FFP MRAD Riflescope

SIG SAUER TANGO-MSR 3–18×50 First Focal Plane MRAD Riflescope

The SIG SAUER TANGO-MSR 3–18×50 is a versatile first focal plane riflescope for precision-rifle practice, target shooting, hunting, and recreational long-range use. It combines a six-times magnification range with a 50mm objective, 34mm main tube, illuminated MRAD Milling 2.0 reticle, and matching 0.1 MRAD locking adjustments. The package also includes a 34mm ALPHA-MSR aluminum mount with a 1.300-inch height.

This configuration gives shooters a useful middle ground between a traditional hunting scope and a dedicated high-magnification target optic. The 3× low end supports target acquisition and a wider field of view, while 18× provides the detail needed for smaller aiming points and longer distances. Because the magnification range is broad, the shooter can adapt the image to the target and conditions rather than operating at maximum power all the time.

First Focal Plane MRAD Milling 2.0 Reticle

The reticle is located in the first focal plane, so its apparent size changes as magnification changes. Its angular subtensions remain consistent throughout the magnification range, allowing the shooter to use the reticle for measuring, holding, and communicating corrections at any power setting. This is particularly useful when a shot must be made at a lower magnification for field of view or stability.

The MRAD Milling 2.0 pattern provides reference marks for elevation, wind, and target measurement. Illumination improves visibility when the reticle would otherwise blend into a dark target or background. Brightness should be set only high enough to produce usable contrast; an unnecessarily bright reticle can obscure fine detail.

Matching 0.1 MRAD Adjustments

The scope’s turrets adjust in 0.1 MRAD increments, keeping the reticle and turret system in the same angular unit. A correction observed through the reticle can therefore be applied directly to the turrets without converting between MRAD and MOA. Locking controls help guard against unintended adjustment after the rifle has been zeroed.

Repeatable results still depend on correct mounting and a properly established zero. The optic should be leveled, positioned for safe eye relief, and installed using the torque values specified for the mount and firearm. Shooters should verify zero after installation, after a significant impact, and whenever the optic or mount is removed.

34mm Tube, 50mm Objective, and Included Mount

The 34mm main tube supports the scope’s adjustment system and requires compatible 34mm rings or a mount. SIG SAUER includes a 1.300-inch-height ALPHA-MSR aluminum mount with this package, reducing the number of separate components needed for many modern sporting-rifle installations. Fit still depends on the receiver rail, stock position, rifle geometry, and required objective clearance.

The 50mm objective is sized to support a bright, useful image without the bulk of a larger 56mm design. Actual image quality depends on magnification, focus, atmospheric conditions, available light, and consistent eye position. Taking time to set the diopter and parallax correctly helps the shooter obtain a clear reticle and minimize aiming error.

Practical Applications

• Precision practice: First focal plane subtensions and matched MRAD controls support measured corrections.
• Long-range target shooting: Up to 18× magnification helps resolve smaller aiming points at distance.
• Field use: The 3× low end provides a wider view for locating targets and moving between shooting positions.
• Training: A consistent MRAD system helps shooters learn holds, spotting calls, and turret corrections.
• Modern sporting rifles: The included 34mm ALPHA-MSR mount simplifies setup on a compatible rail.

Exact Model Details

This listing is for SIG SAUER manufacturer part number SOTM63001 and UPC 798681696246. It is the black TANGO-MSR 3–18×50 model with a 34mm tube, first focal plane illuminated MRAD Milling 2.0 reticle, 0.1 MRAD locking adjustments, and included 1.300-inch MSR mount. It is not the MOA-reticle version identified by SOTM63000.

Before use, read the manufacturer’s instructions and confirm that the mount, rail, firearm, and intended application are compatible. Always keep the firearm unloaded and pointed in a safe direction during installation, and use appropriate eye and hearing protection when zeroing at the range.