Terri, this will not fit your p365. This is meant for a Springfield hellcat. Sorry but hope this helps.

Terri, no, this is designed to fit the Springfield Hellcat Models. I recommend the Olight Baldr Integrated combo green laser light combo -- amazon.com/dp/B08FF4V3VW?SubscriptionId=AKIAINII3XBB4YWNS5LQ&ascsubtag=826539899-16-123458011.1648910018&linkCode=osi&tag=d_2b_a_p-20&th=1

Not sure if this Will fit but here's another option.
When it comes to the P365, there's simply no better option than Streamlight TLR-6 tactical light. Why? Because this light was designed exclusively and solely for the P365. This light is ultra lightweight and compact and it comes with an ambidextrous on and off button.