I have a Daystate Midas. I exchanged the brass cylinder for a polished Stainless Steel clylinder. It has a stainless steel barrel support, power adjuster and filler cap. Breech and rear of gun is Colour Case Hardened as are the scope mounts. It has a Simmons Stainless Steel modified bolt assembly that was specially made for me. The gun was worked on by to friends in the industry who are master engineers. This gun endorses their work. It is truly unique and in mint condition. Have not fired it for two years as I am now into Rimfire. Also have anothe Midas converted to stainless steel but no colour case hardening and with original blued bolt. Gun is like new. Both in .22..