ooo, and its about 2/3 size of the soviet rifles, ###yyy
just using google AI, now some more googling
The falling block action is historically favored for heavy anti-tank rifles and small trench artillery due to its incredible strength. Because the breech block slides vertically in solid steel tracks, it can withstand massive pressure while remaining relatively compact.The historical weapons that bridge the gap between heavy firearms and light trench artillery using a falling block mechanism include:
Heavy Anti-Tank Rifles (Falling Block)
Solothurn S-18/100 (and S-18/1000) SeriesCaliber: 20 × 105 mm B or 20 × 138 mm BDesign: Designed by Germany (but built in Switzerland to bypass treaty restrictions), this massive weapon utilized a modified semi-automatic mechanism driven by a rugged, vertically moving sliding block to handle high-pressure 20 mm autocannon rounds.
Madsen 20 mm Anti-Tank GunCaliber: 20 × 120 mmDesign: Though often categorized as a light cannon, this Danish weapon was issued as an anti-tank rifle with a bipod. It adapted a modified version of the famous Madsen falling block/tilting block architecture to safely contain high-velocity armor-piercing shells.
Type 97 20 mm Anti-Tank RifleCaliber: 20 × 125 mmDesign: Imperial Japan's primary heavy anti-tank rifle used a gas-operated action where the bolt locked into the receiver using a dropping block variant. It required a team of men to carry and fired a devastating 20 mm projectile.Small
Trench Artillery & Infantry Support Guns (Falling Block)
Canon d'Infanterie de 37 mm Modèle 1916 TRPCaliber: 37 × 94 mm RDesign: The quintessential World War I trench artillery piece. This French rapid-fire gun used a hand-operated, vertically sliding falling block breech. It was light enough to be dismantled and carried by infantry to eliminate enemy machine gun nests.
3.7 cm Infanteriegeschütz M.15Caliber: 37 mmDesign: Austro-Hungarian Empire's primary trench gun. It used a rugged vertical falling block breech mechanism, allowing infantry to rapidly load high-explosive or anti-armor shells directly inside tight trench networks.
McClean 37 mm Automatic CannonCaliber: 37 mmDesign: An early American design that integrated a gas-operated block mechanism. While it saw very limited action, it represents the exact boundary between a heavy crew-served firearm and light artillery.
Modern Anti-Material Equivalents
Anzio 20mm RifleCaliber: 20 × 102 mm VulcanDesign: While the standard Anzio is a bolt-action, modern custom firearm designers targeting extreme calibers (like the 20 mm or .950 JDJ) frequently utilize scaled-up single-shot Farquharson or Sharps-style falling block actions because standard rotary bolts become too massive to operate by hand.