SIG SAUER TANGO-MSR 1-8x24mm Rifle Scope

The SIG SAUER TANGO-MSR 1-8x24mm is a versatile low-power variable optic built for close-range speed and extended-range target identification. This exact black configuration is manufacturer part number SOTM81000 with UPC 798681656127. It combines a true 1x low setting, 8x maximum magnification, an illuminated MSR-BDC8 reticle, and an included 1.535-inch ALPHA-MSR cantilever mount in one ready-to-install package.

1-8x magnification range

At the 1x setting, the TANGO-MSR provides a wide field of view for fast target acquisition and movement through close-range stages or field positions. Increasing magnification to 8x helps the shooter identify smaller targets and apply a more deliberate hold at distance. Published specifications list a field of view from approximately 124.8 feet at 100 yards on low power to 19.6 feet at 100 yards on high power.

The 24mm objective and 30mm main tube keep the optic compact while providing the adjustment range expected from a modern LPVO. Eye relief is listed at approximately 3.74 to 3.93 inches, giving the user room to establish a consistent head position across the magnification range. The external magnification ring is designed for positive operation, and the included throw lever makes power changes easier when time or gloves make a small ring harder to manipulate.

Illuminated MSR-BDC8 reticle

The second-focal-plane MSR-BDC8 reticle remains the same apparent size as magnification changes. Its center aiming features support fast use at low power, while the lower stadia provide reference points for elevation holds when the optic is used at the magnification specified for the reticle. Because ballistic holdovers vary with ammunition, muzzle velocity, sight height, environmental conditions, and zero distance, users should confirm every hold with their rifle and chosen load.

Red illumination offers eleven brightness settings, allowing the reticle to be adapted to changing light. The illumination control is separate from the capped windage and elevation turrets. Each adjustment click moves the point of impact 0.5 MOA, and the optic provides up to 100 MOA of total windage and elevation travel according to published specifications.

Optical protection and field construction

SIG SAUER applies SpectraCoat lens coatings to reduce reflections and support light transmission across the visible spectrum. The housing is rated IPX-7 for water resistance and is nitrogen-purged to resist internal fogging. Capped turrets help protect the zero from accidental movement during transport, sling carry, or use around equipment. The black finish keeps the optic visually compatible with most rifle configurations.

Published weight for the scope is approximately 18.6 ounces before accounting for the mount. The supplied ALPHA-MSR mount is a one-piece aluminum cantilever design made for a 30mm tube and a Picatinny-style top rail. Its forward offset helps establish appropriate eye relief on an AR-pattern receiver while keeping the mount attached to the receiver rather than bridging onto the handguard.

Key specifications

• Magnification: 1-8x
• Objective lens: 24mm
• Main tube: 30mm
• Reticle: illuminated MSR-BDC8
• Focal plane: second focal plane
• Illumination: red LED with eleven brightness settings
• Adjustment increment: 0.5 MOA per click
• Total adjustment range: 100 MOA windage and elevation
• Eye relief: approximately 3.74-3.93 inches
• Field of view: approximately 124.8-19.6 feet at 100 yards
• Water resistance: IPX-7
• Lens coating: SpectraCoat
• Included mount: 1.535-inch ALPHA-MSR cantilever mount

Installation and zeroing notes

Before installation, confirm that the firearm is unloaded and follow the scope and firearm manufacturers’ instructions. Mount the optic only to a compatible receiver rail, observe the specified ring and crossbolt torque values, and verify adequate eye relief in the intended shooting position. After bore-sighting, establish a live-fire zero and confirm the reticle’s hold points with the actual ammunition to be used.

This listing is for the black SOTM81000 variant. Confirm the carton label shows UPC 798681656127, since other TANGO-MSR models may use different magnification ranges, finishes, reticles, or mount heights. A rifle, ammunition, lens caps beyond the factory package, and other accessories are not included unless expressly stated.