Moses makes a replacement for about $500

Not sure how it lines up with G&L's shape but here's it's specs...
Headstock: Moses ‘hooked’ 4+1; ‘scooped’
Shape: Oval
Nut Width: 1.75"
Depth at 1st fret: 0.75”
Depth at 12th fret: 0.85"
Heel Width : 2.75"
Heel Shape: Standard Music Man/G&L
Standard Fingerboard Radius: 16"
Number of Frets: 21 to heel » See Note
Fret Style : Dunlop 6150 Jumbo
Inlay (face & side dots): White
Options Headstock: Moses 3+2 ‘scooped’
Tuners: Standard Music Man/G&L; Gotoh GB7; Schaller M-4; Sperzel; Hipshot Ultralite
Frets: 6000, 6100
Inlay: Mother of Pearl, Paua Abalone
Lines: White; gray
Left-handed: No