g3- little trigger adjustability
- opto reflective board
- orings are in the bolt
- 180 operating pressure
- got more upgrades and not compatible with the spec-r
spec-r (just released) - better trigger adjustability as far as: set point, activation point, and return.
- micro switch board.
- orings are in the breech.
- more detailed manual
- lighter. 1.68 lbs.
- milling are more tone down and regulator adapter were shorter.
- "suppose to be more efficient" 150 psi operating pressure.
- might not need an upgrade. we dont know for sure.