The adjustable mount has more than one screw holes but only ONE screw is included and needed, choose one screw hole and use the screw to secure the unit on the rail. To use this product, your gun must have the Picatinny rail. This light will NOT fit Taurus G2C G3C pistol. LED light and laser sight can be turned on or turn off independently, therefore, you may have combinations of light and laser, light (strobe mode available) only, and green laser only. Will not fit XD or alike. We are calibrated for accuracy before shipment,you can adjust and zero-in this laser just like any other sight, Use the elevation and windage wrenches included. Contact us if you have any concerns. Our products can be used in combat situation, So ZERO risk purchase. The LED Flashlight and Green Laser sight are powered by a Built in rechargeable battery, which is charged with a Micro USB charging cord. The green laser can used to 5 hours. The powerful battery life allows you not to worry about running out of power. Precision laser sight, beam intensity/wavelength: <5 mW peak, 532 nm, laser Class 3a. It meets US safety standards. Extreme bright LED gun flashlight and laser sight combo. This light will NOT fit Taurus G2C G3C pistol.

Night vision: No. Mounting Type: Picatinny Mount. Compatible Devices: Handgun. Material: Aluminum. Sport Type: Hunting. Style: Picatinny. Color: Black. Brand: Gmconn. Date First Available: January 25, 2021. Best Sellers Rank: #56,381 in Sports & Outdoors. Customer Reviews: 4.5 out of 5 stars 796 ratings 4.5 out of 5 stars. : B08TWKY53Z. Sport Type: ?Hunting. Included Components: ?Batteries included. Style: ?Picatinny. Part Number: ?GM1102. Manufacturer: ?Gmconn. Number of Items: ?1. Material: ?Aluminum. Color: ?Black. Model Name: ?GM1102. Warranty Description: ?2. Brand Name: ?Gmconn. Package Weight: ?0.12 Kilograms. Item Package Dimensions L x W x H: ?3.82 x 2.95 x 1.65 inches.