The Streamlight TLR-7X Sub Light is designed for 1913 short models, delivering a maximum output of 500 lumens. This weapon light measures 6.3 inches in length and is constructed from aircraft-grade aluminum in a sleek black anodized finish. It includes a universal rail mount for easy attachment.Key FeaturesUniversal Rail Mount: Compatible with various firearm models, ensuring secure attachment.Ambidextrous Multi-Function Push Button Switch: Allows for easy activation from either side.Strobe Function: User-enabled strobe feature for enhanced visibility.Includes Battery: Operates on one CR123A lithium battery, which is included with purchase.Waterproof Rating: Features a waterproof design for reliable performance in various conditions.