Secure Your 9mm Smart Laser Cartridge while using with your Smart DryFireMag. This safety pipe is part of the Smart DryFireMag safety pipe system, for additional protection, alignment and accuracy! Easy to install in a matter of seconds - and no tools required. Ideal for use with the Glock 17 and Glock 21. The pipe and red nut combination serves as a visual safety indicator, physically blocks the chamber from live ammunition, and, when used with the adapter rings, ensures precise alignment of the SureStrike(TM) laser cartridge for accurate shot placement. The long safety pipe is made to fit all handguns with barrels from 3.5-4.8" inches. Long Safety Pipe Length: 3-7/8" (3.875 inches) SKU: 9MSP-L Safety Pipe Instructions PDF