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The initial Mod 2s were Nos. 32–35, with other later converted to Mod 2. These were all constructed of gun steel. [2] The 10-inch Mark 3 Mod 0 was built in a length of 40 calibers, had a tube, jacket and four hoops with a locking ring, and a screw box liner, all of which were manufactured out of nickel-steel. [1]
The Heckler & Koch MK 23, MK 23 MOD 0, Mark 23, or USSOCOM MARK 23 is a semi-automatic large-frame pistol chambered in .45 ACP, designed specifically to be an offensive pistol. The USSOCOM version of the MK23 came paired with a laser aiming module (LAM) and suppressor .
The 3-inch/50-caliber gun (Mark 22) was a semiautomatic anti-aircraft weapon with a power-driven automatic loader and was fitted as single and twin mounts. The single mount was to be exchanged for a twin 40 mm antiaircraft gun mount, and the twin 3-inch/50 for a quadruple 40 mm mount, on Essex -class aircraft carriers , and Allen M. Sumner and ...
The Mod 0 used an increasing twist in the rifling while the Mod 1 used a uniform twist and a different groove pattern. The Mark 3 was the same as the Mark 2 but used a one-step conical liner. The Mark 3 Mod 0 had an increasing rifling twist (like the Mark 2 Mod 0) while the Mark 3 Mod 1 utilized a uniform twist.
The Mod 6 was a Mod 4 gun that had been modified for use in the 5-inch Mark 8 Mods 4, 13, and 14 mounts. The breech was turned down a 0.25 inches (6.4 mm) to 16.25 inches (413 mm) for 13.435 inches (341.2 mm) from the face of the breech with the front part of the thread for the sleeve cut away.
The Mark 3 Mod 1 was constructed of tube, jacket and eight hoops while Mod 2 was identical to Mod 1 but with different steps under the chase hoops. Mod 3 was, for one gun, lengthened to 40 calibers and was removed from service prior to the start of World War I. Mod 4 was, also for one gun only, different from other Mods in having a ring shrunk ...
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The Mark 3 was a 48.9 calibers built-up gun designed and built in the United Kingdom for use in the two New Orleans-class protected cruisers that the US Navy had purchased from the United Kingdom before the Spanish–American War. They were based on the British 4.7-inch Gun Mark IV, but a non-standard export model, the standard Mark IV was 40 ...