Trinity Red Dot Sight with Weaver-Picatinny Mount for Pistol/Rifle/Shotgun Class IIIa 635nM Less Than 5mW.

red dot sight fits most handguns with picatinny rail under the barrel. Weaver/Picatinny Mount will easily clamp onto Smith and Wesson SD9VE that have a Weaver Style Accessory Rail Under the Barrel. Improve your shot and a sure life saver for home defense. On/Off Rear Cap Switch is easily turned On or Off with your trigger finger All Aluminum Construction, Black Anodize Finish.