Type | Proof, M54A1 |
---|---|
Projectile | steel, purple, 1 copper driving band Projectile Markings: (black ink) 20 MM HPT M54 A1 LC-SP-716 Driving Band Markings: GLN-1-4-68 M54A1 |
Case | brass, choke crimp Markings: (black ink) 20MM M103 RNO 1-932-68 |
Primer | electric, flat, brass, ring crimp, red annulus |
Headstamp | [none] |