Forgotten Weapons covers some lesser known pistols WW2 Japanese military used
https://www.youtube.com/watch?v=838AnFOn8nY
Links to auctions
Sugiura: http://www.rockislandauction.com/viewitem/aid/64/lid/1477
Inagaki: http://www.rockislandauction.com/viewitem/aid/64/lid/1481
Ian has been uploading a lot and here are some other interesting ones.
Schouboe Model 1903: https://www.youtube.com/watch?v=FKQ_8MP4zHE
Allen & Wheelock Lipfire Navy revolver: https://www.youtube.com/watch?v=H29_EKM9v9A
Chinese mystery pistols: https://www.youtube.com/watch?v=H29_EKM9v9A
the Guns of John Pedersen: https://www.youtube.com/watch?v=U998IeAAWYY
Prototype Optic on an M1 Garand: https://www.youtube.com/watch?v=dDOKg-1eNpI
Panzerbuchse 39 Anti-tank rifle: https://www.youtube.com/watch?v=jupKqqqgBJM