A military small & medium caliber ammunition collection

20 x 110mm USN United States

20 x 110mm USN Inert MK 100 United States 20MM-MK.5. MOD.0 NECO 12 52 profile view.20 x 110mm USN Inert MK 100 United States 20MM-MK.5. MOD.0 NECO 12 52 head view.

Details

TypeInert, MK 100
Projectilesteel, brown, 1 copper driving band Projectile Markings: (white ink) 20 MM (DUMMY) LOT-1 FOR GUN MK 12 AER-53 Driving Band Markings: 20-MM MK.11-0-LOT SD 54
Casesteel, roll crimp, zinc chromate plated
Primerinert, flat, brass, 3-stake crimp, dark brown
Headstamp20MM-MK.5. MOD.0 NECO 12 52
NotesInert case filler.