Winchester Model 12 pump action shotgun in 12 gauge, a popular weapon as a trench gun and in its riot gun configuration as shown here. tube magazine holds five shells usually in 00 Buckshot. Frequently used to escort & guard POW's.
US Combat Shotguns - My Display
Winchester Trench Shotgun with Winchester 1917 Bayonet
Winchester Model 12 12ga made in 1914 for sale
Lewis gun, Military Wiki
Model 12 trench gun?, Winchester Military Arms
Muzzleldrs - Civil War Rifle
Barrett M82, M107. 48.4 Inch, 123cm, Wooden Model, Cosplay
DWM 1914 P-08 Luger - new to me !
Firearms History and the Technology of Gun Violence – UC Davis Library
Winchester 1907 self loading with British proofs but no retailer
Winchester Model 12 - Arms and other weapons - The Great War (1914
Model 12 - Standard Forearm or Replacement
Winchester Goes To War An Official Journal Of The NRA