i just build a tack pusher 10/22
got stuff from Wanstalls, Dlask and mil-arm.
replaced everything on the gun except for the receiver housing. (and Dlask has some nice ones of those)
you just need to look around a little.
ive been doing it for the last month or so and im sure if i had $1,000 laying around right now i could order pretty much every part here in the next 10 minutes and get it all in the mail by the end of the week and build an entire Frankenstein 10/22 from nothing.
if your looking for internal parts id suggest Volquartsen (mil-arm in edmonton has them and they are also putting in a order here soon)
if your looking for custom stuff like barrels and stocks id look at Dlask Darr in BC
if your looking for Tactical Solutions items like barrels and compensators or Hogue stocks Wanstalls in BC is good.
those are the placed i used and im 100% happy with all my purchases and the service i received.