Only used a few times Cash or Venmo Description: This Smart DryFireMag® Red Laser Training System features a 9mm Smart SureStrike™ Optic Red Laser Cartridge and is ONLY compatible with 9mm pistols UNLESS you purchase a Caliber Adapter Ring for 40 S&W, 357 SIG or 45 G.A.P. models. Compatible Glock models: G17, G19, G19x, G26, G34, G45, G47, G49