Secure Your 9mm Smart Laser Cartridge while using with your Smart DryFireMag.Use the included short safety pipe kit to secure your 9mm Smart Laser cartridge for enhanced dry fire training. The short pipe is ideal for barrel lengths greater than or equal to 3 9/16" and less than 4 1/8". This short safety pipe length is ideal for the Glock 19, Glock 48, Walther PDP Compact, Ruger RXM, Sig P320 Compact, S&W M&P (Standard) and PSA DaggerCompact/Micro DaggerInstall the short safety pipe (and black extension- if needed) with the nut, and you are good to go! Short Safety Pipe Length: 2-7/8" (2.875 inches)SKU: 9MSP-KIT Safety Pipe Instructions PDF