The first British built Magnum springer of the 1970s, the Webley Vulcan, had a 2.5mm transfer port.
I've used 2.5mm ports on a number of guns without problems.
The first British built Magnum springer of the 1970s, the Webley Vulcan, had a 2.5mm transfer port.
I've used 2.5mm ports on a number of guns without problems.