Probably 16’', based on photogrammetric measurement by vt1. And @howdoiknowthisinfo has an officially looking photograph of (probably) that gun in conjunction with an inch rule here, but as usual without a reference to the source.
Probably 16’', based on photogrammetric measurement by vt1. And @howdoiknowthisinfo has an officially looking photograph of (probably) that gun in conjunction with an inch rule here, but as usual without a reference to the source.