<span style="font-weight: bold">Valdada IOR Long Range Tactical Rifle Scope 30mm Tube 4x 24mm 308 M1 Turret Illuminated Nato MP-9 Reticle Matte</span> Anyone have any experience with these? I have a chance to pick pne up at about $350, and wonder how well it will work on an M1A Scout or DSA...