The HPA is indeed High Pressure Air around 3000PSI and only hand pumped with a $160 hand pump or fill with a scuba tank with adapters. You would need some type of bulk fill system on the gun.
Would work with no mods if a bulk fill syatem on the gun and with a remote HPA air tank for paintball as it has an 850 PSI regulator built into the tank.
The valve in the 1077 would more than likely lock up at around 1000 to 1100 PSI anyway.
If you had an electric motor and used some geraing for incresed torque the have a cam & lever system to operate the trigger it would be full auto.
A simple cam like a circle with a stud mounted on it will give you latterial motion for circular motion plus allows for the trigger to return and reset. Green circle is mounted on a motor and the black stud screws onto the Circle. A lever is the attched over the black stud and to the trigger.
As you can see when motor turns then the lever will move back and forth thus pulling then reseting the trigger.
All assuming this can be placed in the 1077 someplace.
I could use a 1077 parts diagram.
