Lone Wolf Distributors’ Timberwolf Frame for Fullsize 2nd and 3rd Generation 9mm, .40S&W, and .357Sig Glocks has been out for several years now. Their Compact Timberwolf Frame just became available for pre-order recently.
The Compact version has all of the features of its full size counterpart like interchangeable back straps, an extended beaver tail, improved texture, and round magazine release. It is intended for use with Glock 19/23/32 slides. The back straps and magazine release are included. All other original frame parts will drop in without fitting.