Dragonfly .177 arrived today (A progressive review in stages)

[Relentless Holiday]

Looking at how easy the barrel is to remove... this gun seems like it would be easy to convert to a .25.

Didn’t someone do that here? I’m guessing barrel to fit, and open up everything involved in loading it?

I would bet it will be SUPER easy for someone if it hasn't been done.  Open up the breech and probe it right and your done after you Barrel band it for whatever the new OD is.  The power plant is very worth of the effort.

I will measure it for you but beware that my digital caliper is a plastic POS from harbor freight. 

[Relentless Holiday]

Horatio, The muzzle guard/sight seems to be glued or pressed in place and the barrel O.D. is .475 Inches.

[Horatio]

Horatio, The muzzle guard/sight seems to be glued or pressed in place and the barrel O.D. is .475 Inches.

Thank you. .475=12mm

[subscriber]

My apologies, if what I am adding has been covered.  Else, it may help you like your new Dragonfly a lot sooner.  Specifically, about addressing the high pumping effort and very rough bore:  https://www.gatewaytoairguns.org/GTA/index.php?topic=155047.msg155710006#msg155710006