BSA Optics TW35RDCP 3.5-10x40 Tactical Weapon Red Dot Rifle Scope, 5 MOA 5 Moa Illuminated, Red Center Dot 11-position Rheostat Illuminated Red Dot Sight Will Find Targets Quickly & Accurately Ideal For All Light Levels & Conditions 5/8" Adjustable, Weaver-style Base