C&h Duty Optic 3 Moa Dot Red 4.13"x2.75" emitting a 130dB alarm that

emitting a 130dB alarm that is audible up to 1"250-feet (381-meters) when activated

They are manufactured with heat treated internal lockworks

padded handle

Advanced parallax free lens design

2 - Screws

C&h Duty Optic 3 Moa Dot Red 4.13"x2.75" emitting a 130dB alarm thatThe Duty is a rugged, Closed Emitter pistol optic that is Sealed and ready for duty. Never worry about dirt, dust, or water clouding or disrupting your dot. This side clamping Optic is sure to be the best companion to your Duty, carry, or competition gun. Features : 50,000 Hour Battery Life 3 MOA Red Dot 10 Levels of Brightness Auto Off After 5 Minutes of Inactivity Motion Control (Shake to Wake up) IPX7 Waterproof Aimpoint ACRO Footprint