Banjo A6 chord (Open G)A sixth on the 5-string banjo: 2 2 2 4, and 3 more shapes

Frets, string 4 to string 1: 2 2 2 4 (first position)

1. String 4 (D): 2nd fret, index finger (barre), E
2. String 3 (G): 2nd fret, index finger (barre), A
3. String 2 (B): 2nd fret, index finger (barre), C♯
4. String 1 (D): 4th fret, ring finger, F♯
5. String 5, the short g: open, G, not in the chord

Sounds: E A C♯ F♯  ·  A6 is A, C♯, E, F♯ (1 · 3 · 5 · 6)

The 5th string: the short g rubs against the F♯ in this shape, a semitone away: some players let it ring, some skip it.

With a capo: on the 2nd fret it’s 0 0 0 2 (frets counted from the capo), an open G6 shape. Spike the 5th string at the 7th fret to keep it in tune with the capo.

Open G tuning: gDGBD, the short 5th string first, then strings 4 to 1.