Laser Ammo Adapter ring 0.40S&W. Simply thread the Laser Ammo Caliber Adapter Ring onto the SureStrike cartridge and you are good to go No tools needed. Important: All pistol adapters require the use of a safety pipe and nut. Specifications for Laser Ammo SureStrike Adapter Ring 9mm to 0.40SW: Manufacturer: Laser Ammo Caliber: .40 S&W Quantity: 1 Features of Laser Ammo SureStrike Adapter Ring 9mm to 0.40SW: converts your 9mm Premium kit to a 40SW caliber Package Contents: Laser Ammo Adapter Ring for SureStrike Laser Trainer 9mm 0.40S&W 0.40SW Adapter Ring Features/Specifications: convert your 9mm SureStrike Premium Kit to a 40SW caliber. Included Accessories: 0.40SW Adapter Ring