Adapt Your 9mm SureStrike Laser Cartridge to Work with Your Favorite 45ACP!This is one of Laser Ammo&';s innovative patents. No need to buy 2 different lasers in order to use your 9mm and your 45ACP pistols.Use the included adapter rings to convert your 9mm SureStrike into 45ACP laser training cartridge.Easy to install and requires no tools! Simply follow the included instructions to thread the 45ACP caliber adapter ring onto the SureStrike 9mm cartridge. Install the safety pipe with the nut, and you are good to go!SKU: 45SSADK