The firing mechanism was built into the breech ring and was of the continuous pull type.
2.
National Forge of Irvine won a $ 131, 640 contract from Watervliet Arsenal in Watervliet, N . Y ., for breech ring forging.
3.
Mod 0 was very similar to the Mark 3 Mod 2 but with the breech ring lengthened, the trunnion hoop removed and the barrel threaded.
4.
The gun barrel was of wire-wound construction : " The gun body is of steel and consists of tubes, a series of layers of steel wire, jacket, breech bush and breech ring ".
5.
The "'Cannone da 90 / 50 Ansaldo Model 1938 "'and "'OTO Model 1939 "'had an autofretted monobloc barrel with a screwed-on breech ring containing the horizontal sliding breech block and seatings for the recoil and run-out cylinders.
मोबाइल