| Production Run | Dates | Serial Numbers | Notes |
|---|---|---|---|
| Start Rev. 0.1 | August 2001 | 001001 | |
| Rev. 0.1 | September 2002 | 001755 | Wave spring installed in handle |
| Rev. 0.2 | November 2006 | 003509 | New front door latch #93-73701 |
| Rev. 0.3 | July 2006 | 004101 | Ash pan redesigned to be larger |
| End | June 2011 |