It does look like a liner when you look at the muzzle....to me.
You and me both.
Once upon a time, Gander Mountain would convert a .22 to Mach 2 using a liner for about $150. The local store would send them back to the home planet for the conversion. Toyed with the idea myself for a bit.
Ammo can be found online for $8.00 or so. Give it a whirl and see what happens.
