Bushmeister Tac

[Tiger650]

Emailed Nioa re the ported choke which I found difficult to measure, pleasant young bloke had one of their Gunsmiths measure and confirmed as improved cylinder.
Below may be helpful regarding stock shims.

https://www.youtube.com/watch?v=alYJH66tN18

Impressed with the gun, the iron sights are excellent.

[JohnV]

Very interesting video . There is nothing better than a shotgun that fits you well and patters where you want it . That shim system is a great idea .