Gibson Firebird I Vintage Sunburst (531)Stand out both in the studio and on stage! Designed for performance, the Gibson Firebird I features neck thru mahogany construction, a single, brightly cutting Firebird Mini Humbucker and striking, stripped down looks. A unique instrument with simple controls and flawless handling, the Firebird I will give you hours of comfortable playing time. Neck Material : 3 ply Mahogany Neck Profile: Slim Taper, Neck Through Body Construction Scale Length : 24.