If you need to reinstall LASR Classic on your computer, the latest install file, 4.2.4.0. Even though this is the actual install file, you will need to have a valid license for LASR Classic to work so you can conduct dry fire & laser training. If you don't yet have LASR Classic, you can purchase the LASR Classic License in the LASR Store.
LASR requires a couple of additional pieces of software from Microsoft® to function. The LASRSetup.exe that you download with the button above will include these pre-requisites:
Microsoft .NET Framework 4.6.1 (x86 and x64)
Microsoft System CLR Types for SQL Server® 2014 (x86)
Microsoft Report Viewer 2014 Runtime
And, of course, it will install LASR.
If the installation detects that you already have one of the pre-requisites, it will not be installed. Instead, follow the on-screen instructions once the installer begins running.