Sightmark has developed a scope just for your scout rifle. Made for any rifle but with the M1A as the basis weapon you get a generous 8 inch eye relief and with a fix 2.5 magnification a field of view that gets you on target quickly. Windage and elevation adjustments let you get back to center of mass quickly and the red illumination let you stay on target even low light shooting.

Specifications and Features:
Sightmark SM1305
Rapid M1 2.5x20mm Scout Scope
Magnification 2.5x
Objective Lens: 20mm
Tube Diameter 1"
Anodized 6061-T6 aluminum tube
Generous 8in eye relief
Finely etched duplex reticle with red illumination
10 brightness settings for lowlight shooting
Fully multi-coated, scratch resistant lens system
Shockproof and fogproof reliability
Second Focal Plane
Illuminated Red
0.5 MOA per click adjustability
Battery life, hours 35-350
Battery Type CR2032
Diameter Exit Pupil 8
Diameter Eyepiece 1.7
Diopter Adjustment +3 to -3
Elevation Adjustment 55
Windage Adjustment 55
Parallax Setting 50 yards
Field of view 20.4ft at 100yd
IP Rating IP67-waterproof to 3ft for 1hour
Maximum Recoil 800G's
Nitrogen Filled Yes
Operating Temp 0 to 122 F
Reticle TDR
Length 7.6"
Weight 11.8 oz.
Width 2.4"
Height 1.7"
Windage and Elevation Lock No
Color Matte black