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20 x 110mm USN United States

20 x 110mm USN TP United States IS 1-54 20MM-MK.5.MOD.0 profile view.20 x 110mm USN TP United States IS 1-54 20MM-MK.5.MOD.0 head view.

Details

TypeTP
Projectilesteel, aluminum windscreen, green, 1 copper driving band Projectile Markings: (black ink) 20 MM (TP) ZS-76 FOR GUN MK-12 AER-54 Driving Band Markings: 20MM MK11 0 -LOTB 72A
Casesteel, choke crimp, cadmium plated
Primerelectric, flat, brass, 3-stake crimp
HeadstampIS 1-54 20MM-MK.5.MOD.0