A military small & medium caliber ammunition collection

20 x 102mm United States

20 x 102mm TP M55A1 United States  profile view.20 x 102mm TP M55A1 United States  head view.

Details

TypeTP, M55A1
Projectilesteel, aluminum windscreen, black, 1 copper driving band Projectile Markings: (white ink) 20MM BALL M55A1 LC-17-1 Driving Band Markings: * HVM-2-6 56 20MM M55A1 *
Casesteel, choke crimp, cadmium plated
Primerelectric, flat, brass, ring crimp
Headstamp[none]