Luger Barrel Lenghts vrs Useage~~

[stressed]

I'm not sure either. I could see how the 8" barrel would be useful on the deck of a U boat or small patrol boat, for firing at something in the water at distance or length of ship - however they had rifles and MP-40's as well for this role. Perhaps it has the SMG role in WWI as the Bergmann MP18 was rare ad mostly went to the army.