Yes it is.
Not Likely. That is too slow. You would need around 600FPS.
The fps of a paintball gun is usually in-between 300-400
It's not the fps that kills, but the shape of the pellet that will do the job. All the pellet shapes will kill the rabbit, but hollow point pellets will mushroom on impact and make a clean kill. other pellets might travel right through the rabbit and it will hop off and die later
It depends on what you are comparing it with.
For a spring gun, a normal fps would be from 200-280 For an electric gun, a normal fps would be from 300-400 For a gas gun, a normal fps would be from 300-500
300 fps or 320
300
Almost all paintball guns will shoot 300 fps.
All paintball guns shoot between 280 and 300 fps.
The Marksman BB 2020 Buddy rifle is rated at 300 FPS
A good FPS (Feet Per Second) for an airsoft gun depends on where you will be playing. Typically, FPS between 300-400 is suitable for indoor play, while 400-500 FPS is better for outdoor fields. Check with your local field regulations for specific guidelines.
You will have to contact the maker to find out.