The aircraft was introduced at the Aero show held in Friedrichshafen in 2011 and when it was available it was supplied as a complete ready-to-fly-aircraft.

[1][2] The G 4-2 R features a single main rotor, a two-seats-in tandem enclosed cockpit, tricycle landing gear and a four-cylinder, air and liquid-cooled, four-stroke, dual-ignition 100 hp (75 kW) Rotax 912S engine in pusher configuration.

[1] The aircraft fuselage is made with a stainless steel tube frame; the cockpit is formed from carbon fibre.

Its 8.4 m (27.6 ft) diameter two-bladed aluminium Averso rotor employs a NACA 8H12 airfoil and has a 1500-hour time between overhauls.

The G 4-2 R was noted by Bayerl et al. in 2011 for its unusual new aircraft two-year warranty.