The Prototypical 
Guide To 
Paintball Guns 
SEMI-AUTO GUNS
Promaster
 
From the Proto Collection 1998
Manufacturer Line SI
Action Blow Back Semi-Auto
Configuration Upper Bore, Lower Valve
Valve Style Sheridan Based
Caliber 68
Velocity Adjustment ???
Feed Type Direct Feed
Bore Drop
Barrel Removable 11" Aluminum
Set Screw Retension
Gas Source Constant Air Adapter
Features: Options:

Protobable - None at this time.