SIG Sauer ALPHA Scope Mounts & Rings

SIG ALPHA Scope Mounts and Rings

The SIG ALPHA mount holds a riflescope on a Picatinny rail. Height is measured from the centerline of the optic to the top of the rail. ALPHA2 is the extra-high 1.53 in. one-piece mount in 30 mm or 34 mm. ALPHA-MSR is the 1.535 in. cantilever MSR mount in 30 mm or 34 mm, black or coyote. ALPHA3 is the 7075-T6 one-piece mount in 30 mm or 34 mm, 1.375 in. or 1.535 in., 0 MOA or 20 MOA, black or FDE. ALPHA5 is the 0 MOA precision mount in 34 mm or 35 mm at 1.25 in. or 1.535 in., and it is compatible with a 1913 Ringtop diving board.

ALPHA6 is the two-piece aluminum ring set: 30 mm at 0.85 / 0.94 / 1.12 in., 34 mm at 0.95 / 1.12 / 1.25 in., and 35 mm at 0.95 / 1.25 in. ALPHA1 and ALPHA Hunting are two-piece ring sets in 1 in., 30 mm, or 35 mm. Rail torque is 65 in-lb. Scope-cap torque is 25 in-lb on T15 screws. Tube diameter and height have to match the riflescope and the rail. These mounts do not fit every rifle. See also SIG rifle scopes.

How to choose

Want a cantilever MSR mount? ALPHA-MSR. Want extra-high one-piece? ALPHA2 or ALPHA3 1.535 in. Want 20 MOA? The ALPHA3 20 MOA mounts. Want two-piece aluminum rings? ALPHA6. Want steel hunting rings? ALPHA Hunting.