This is the Sig Sauer LIMA365 laser sight in (GREEN) for the P365 compact handgun.
The LIMA365 is a weapon mounted laser sight that allows for improved line-of-sight and fast target acquisition. The LIMA365 is designed to fuse to the grip of the P365 and its no-snag profile reduces the risk of the laser sight catching on holsters, clothing, etc.
The laser utilizes a 1/3N battery to power a 5 MW laser powerful enough to be seen in daylight conditions.
The LIMA365 is water resistant and features and low battery indicator.