Adapt Your 9mm Smart Laser Cartridge To Work In Your Favorite 40S&W Handgun! If you would like to use your favorite 40S&W handgun as well, there&';s no need to buy another laser! The 40S&W adapter ring is the way to go. Use this adapter ring to convert your 9mm Smart SureStrike into a 40S&W laser training cartridge. Easy to install, and no tools required! Simply thread the 40S&W caliber adapter ring onto the Smart SureStrike 9mm laser cartridge. Install the safety pipe and nut, and you are good to go! Check out our components for the safety pipe & nut to use with this adapter ring.Important: All semi auto pistol adapter rings require the use of a safety pipe and nut.