Here are some pics of my newly converted new-production (High Standard) AMT Backup from .40 S&W to 10mm. I still have to engrave the barrel with the new caliber, but you can see how the Double Tap 135 gr. Nosler JHP fits nicely into the magazine once the spacer has been removed. The fit & finish of these new High Standard-produced Backups are MUCH nicer than the old AMT stuff out of California. They have even added a thin stainless steel plate to the right side under the grip panel that covers the tigger bar linkage that was left exposed when AMT was making these. It is a hand cannon and not for the recoil sensitive shooter!! The heavy trigger spring helps to retard the slide along with the recoil spring and dampens the recoil effectively. For an "up close and personal" deep concealment pistol, I believe this is the first TRUE pocket pistol in 10mm. Range reports to follow... Regards, flyandscuba Wanna kill these ads? We can help!