Maybe try phoning North Silva. They now sell some Xisico models. I think Kevin (airsmith) is working on getting Xisico parts too. It would be a good idea to support Kevin since he is a member here. Maybe he will chime in and let us know what's up and if it's possible for him to get the B19 barrel (.22).
It would be hard to make it cost affective as the .177 cal Quest barrel is only $22.00 and that includes the breech block. Any idea what it would would cost to do up a .25 cal barrel? A point of interest- I took the barrel out of the B-20 lastnight and found that the area that fits n the breech block is the same O.D as the Quest. Some fitting is still required ut will be very little. I have a line on a .22 cal B-20 barrel so I think that's the route I'm going, plus the B-20 barrels are better than the Quest.
have you noticed any play in the barrel latch? i just got a quest 1000 and the roller took the varnish off the inside of the stock now my barrel doesnt close too tight, but im gonna get som brass shims in there
I'm not quite sure what you're talking about, "the roller". The breech block seems to rub on the stock when cocking of some Quests. My first one did on the right side and the 500 I got recently purchased does it on the left-go figure