Also here is a Bren machine gun, British only that funnily has a brass disk only. Safe to say disks were a British thing.
Bren machine gun | Light machine gun, British Army, World War II | Britannica
Bren machine gun, British adaptation of a Czech light machine gun. Its name originated as an acronym from Brno, where the Czech gun was made, and Enfield, where the British adaptation was made. Gas-operated and air-cooled, the Bren was first produced in 1937 and became one of the most widely usedwww.britannica.com
This WWI rifle supports my claim that the British liked using the disks but eventually stopped sometime later in WW2 or post.
British Enfield Rifle M1917 · World War I Exhibits
This website is a student-curated exhibit of World War I materials held in McFarlin Library Special Collections at The University of Tulsa. It originated as a series of projects in the English Department's World War I course to commemorate the Centenary. The collection features a wide array of...orgs.utulsa.edu
And if this doesn’t send the bolt home, not sure what can. Maybe a forward assist?
Picture of a British soldier and disk.
Both links showing British soldiers using enfields with visible stock disks.
Can’t get more evident than that. This was WWI. I’ll show WWII soon.
An Official Journal Of The NRA | Over There: Sniper Rifles and Shotguns in World War I
Watch this American Rifleman Television video segment 'Over There! Part 8' to learn about the role of American snipers in World War I, the use of "trench gun" shotguns and the end of World War I.www.americanrifleman.org
No offense, but you type a lot and read very little.