So I saw a thread not too long ago in the BG forums about a 19 hunter with 40 crit on his Lil timmy's peashooter.
SS: noobsauce.jpg picture by nubnoob77 - Photobucket
I did a little searching around, and found out that the 40 crit scope can be applied to any gun on your main, (like the old leg kits) and then sent back to your twink.
I searched for this, and saw someone posted that it can be done with the BoA, but now it can be done with any gun/bow, which opens it up to a lot more players.
Happy twinking!