Gun shops, gun shows.
Glok 22
My best advice is to save your money and buy another firearm. Rohm's were not made to the best of standards and parts are almost non-existent
check with the colt factory: 1-800-962-2658
S&w
try egunparts
Try e-gunparts.com
triplek.com
any there all good love xx
Best left to a gunsmith.
Gun shops, gun shows, on line auctions.
Most local gun shops will provide one with excellent customer service and will carry the .22 pistol. If someone is more inclined to purchase this gun online budsgunshop sells a variety of .22 pistols.
Best left to a gunsmith