Your gun of course. mine was a Taurus Model 970 Taurus USA
8" Black Multi Color Wraps Strap from [http://www.radioshack.com Radioshack] Product Catalog 278-1676 $2.99
or any strap you can get/find.
35mW Green Laser pointer from techlasers.com $99 Infiniti Green Laser Pointer
You can get the higher wattage version from their site. The higher the wattage the meaner the pointer in looks.