Up for sale are two new-in-box Advance Arms .22 conversion kits w/cleaning kits.  These are Model#L.E. 20-21 which fits a Glock20,20SF,21 and21SF and the other is a Model#L.E. 26-27 which fits a Glock 26,27,28 and 33.  They both come with 3 magazines.  $150 for either one