The Lightest Full Metal Pistol Red Dot Sight in the World Only 18.4g (0.65oz)
3MOA Dot Size, 8 Levels & 2 NV Red Dot, Slim & Low Profile, Snag-Free Design
Automatic Light Sensor, MAG Footprint Compatible for RMSc Footprint
Standard Window Size 17x24mm 0.7x0.9", 1" 25.4mm Width, 24mm / 0.9" Height
>50,000 Hours Battery Runtime for Weakest Visible Dot, IPX6 Water Proof
*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts.