DLP Tactical Precision Laser Sight for Beretta Model 92 96 M9 Compact Laser Sight Attaches To Trigger Guard, No Frame Rails Needed Powerful 5mW 650nm Red Laser Diode, Class III A/Class 3R Installs with no modifcation to your pistol needed Ambidextrous Micro-Switch On/Off Activation Powered by 3 LR44 batteries (not included)