Aimpoint 3x Magnifier Fits Aimpoint,Eotech Red Dot Scope With 30mm QD Twist Mount 
Fit Aimpoint and EOTech Scopes, Multi Coated, Flip-up Caps and QD Twist Mount

Magnification: 3x
Objective Lens Dia: 23mm
Exit Pupil: 8.3mm
Length: 115mm (4.5 inch)
Weight (net): 255g (9.0 ounce, with mount) 
Eye Relief: 40mm (1.6 Inch)
Field of View (@100yds): 6.33°
Optics Coating: Multi Coated
Shock proof and Water Proof
High-durability aluminum alloy in black matt body covered with fine rubber and beautiful complement
20mm twist weaver mount can fit any picatinny rail for RAS and RIS etc
Free fitting involved: 30mm twist QD mount, flip-up cap and hex key etc