From UFStarfleet Wiki
The M-75 is a specialized weapon, not standard issue to Marines. It is used by sharpshooters and Reconnaissance Scouts primarily.
Has a much faster power drain then other phaser rifles because it used high powered shots.
The M-75 is the evolution of a variety of weapons and was introduced into service in the mid 2360's to replace the outdated M-62.
Looks much kike a modified M-116 and uses a special power cell called 'Hotpacks' by the people who use them.
- Mark I - Production Model
- Mark II - Upgrade to the XTR-35 Scope