Tactical 1x40RD Red Green Dot/Cross Optical Sight Type:red green dot this solve the issue that

this solve the issue that single shot changes to multiple shot under high voltage

Semi-Auto Mode: Simply press and hold the trigger to engage the semi-automatic firing mode

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Tactical 1x40RD Red Green Dot/Cross Optical Sight Type:red green dot this solve the issue thatThe Tactical 1x40RD Red Green Dot Cross Optical Sight is equipped with a black anodized aluminum body, unlimited eye relief, integrated weaver style mount and lens covers. Its LED illumination is 100% safe for the eyes and offers 5 levels of brightness control. This precison eye scope is for faster, more accurate target acquisition. Features: * LED (Light Emitting diode) 100% safe for the eyes. * Black Anodized aluminum body. * Unlimited eye relief