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The 14-inch M1920 railway gun was the last model railway gun to be deployed by the United States Army.It was an upgrade of the US Navy 14"/50 caliber railway gun.Only four were deployed; two in the Harbor Defenses of Los Angeles and two in the Panama Canal Zone, where they could be shifted between the harbor defenses of Cristobal (Atlantic) or Balboa (Pacific).
Each 14"/50 gun [19] mounted on a 72-foot (22 m), 535,000-pound (243 t) rail carriage with four 6-wheel bogies was under the command of a United States Navy lieutenant with a standard U.S. Army 2-8-0 locomotive, a 10-ton crane car, two armored ammunition cars carrying 25 shells each, two cars carrying the recoil pit foundation materials, two ...
NGSW-R (Next Generation Squad Weapon - Rifle) (6.8 Common Cartridge) -- Sig Sauer MCX Spear rifle and cartridge selected and ordered by US Army as the XM7 rifle and 6.8 Common Cartridge. MRGG-A (Mid-Range Gas Gun - Assaulter) (6.5mm Creedmoor) Mk 17 Mod 1 (FN SCAR-H) (6.5mm Creedmoor) LMT MARS-H 6.5 DMR (6.5mm Creedmoor)
The United States military have expressed interest in pursuing research in electric gun technology throughout the late 20th century, since electromagnetic guns do not require propellants to fire a shot as conventional gun systems do, significantly increasing crew safety and reducing logistics costs, as well as provide a greater range.
On January 19, 2017, the United States Army announced that a customized version of SIG Sauer's P320 had won the Army's XM17 Modular Handgun System competition. The full-sized model was designated the M17, and the shorter length carry model, the M18. [4] The guns have subsequently been adopted by the Army, Navy, Marine Corps, Air Force, and ...
Submachine gun United States Switzerland: Used in Military Police and Security Details as Sub Compact Weapon (SCW) [7] As of 2019 the United States has adopted a small number for use. SIG Sauer MPX: 9×19mm NATO: Submachine gun United States: Used in night operations, close quarters, hostage rescue, and escort [citation needed] Assault rifles ...
The range of the railway weapon was 25,000 yards (23,000 m) at 38° elevation. [9] Like almost all US-made railway guns of World War I (the notable exception being the US Navy's 14"/50 caliber railway guns), these never left the US. [10] Although the twelve guns survived until early in World War II, they were not deployed.
The new Mark II gun car developed during 1918 carried the same 14"/50 caliber Mk 4 gun but addressed the problem areas: it dispensed with the armored gun house, with gunners working in the open; the weight was more evenly spread over 20 axles instead of 12; the French system of rolling recoil was adopted, in which the gun was mounted higher to ...