US Projectile, 1.1 inch AA, Mk 1 Mod 0 - 28, Mk SD 1

 

clip2488

Description

The 1.1 inch Mk 1 is not self-destroying; the 1.1 inch Mk SD 1 is self-destroying. This is the primary difference between the two projectiles.

The Mk SD 1 consists of a Mk 1 projectile body modified for self-destruction by drilling through the wall between the tracer and HE cavities.

The Mk 1 projectile may also be issued BL & T for target practice or de-icing.

The 28 Mods are to distinguish among contractors.

See Also

Nothing else to see.

Source(s)

Collaborative Ordnance Data Repository

OP 1664, Volume 1 - US Explosive Ordnance (1947)