NOTE: ONLY FIT FOR FULL SIZE 1911, THE SPACING OF SCREW HOLES MUST BE 3 1/16” 1911 Green laser beam—wavelength 520nm for the green lase beam, brighter than red beam in the daytime, Laser type Class IIIA, power less than 5mw Upgrade 1911 grips—the upgrade 1911 grips work with most 1911 full size frame including models with AMBI SAFETY, the mounting screw holes interval is 3 1/16” G10 and Aluminum Material—the 1911 grip made of aluminum and G10 material which is half weight of the aluminum, waterproof and solid not easy to break, color dyed inside the material will never fade off, non slippery texture surface is more comfortable to use Rechargeable powerful battery—the 1911 green laser can work 2 hours continuously with the built-in battery, comes with a magnetic charging cable, easy to charge without uninstalling the 1911 grips Front Activation Button—the switch of this 1911 laser just below the trigger after installation, ergonomic design makes you active the grip laser quickly when you hold the gun with right or left hand Package including: 1 1911 laser grips+4screws+2 wrench+1magnetic charging cable+1use manual.