20 x 102 M51A1B1 Dummy

Markings:

Fuze:

No fuze

Projectile:

Engraved:

20MM DUMMY

M51A1B1

Drive-band:

blank

Casing:

20MM, M51A1B1

DUMMY G+W-1-1-N-71 (G+W : Gulf & Western Industries, Inc, USA)

Headstamp:

blank

The M51A1B1 has a different bottom as the M51A1, as it is missing it’s primer.

The ‘simulated’ primer is replaced by a small dimple on this A1B1 model.