50 BMG - Fifty Caliber Schooter's Association (FCSA)
   The Fifty Caliber Shooter's Association, Inc. (FCSA) was established in 1985 by a small group of dedicated people who set for themselves the mission to advance the sporting uses of the .50 BMG cartridge.
   http://www.fcsa.org/

Desert Toys - .50 BMG rifles
   .50 BMG rifles and other gear for the active individual.
   http://www.deserttoys.com

LAR Manufacturing 50 caliber rifles
   Grizzly Big Boar 50 Caliber Rifles Manufacturered by LAR Manufacturing.
   http://www.largrizzly.com

River Valley Ordnance - 50 BMG processed cases for reloading
   These are once-fired US GI cases that have had all the metal work done to them, and are ready to load. A real time saver when you load a lot of 223 or 50 Caliber ammunition. They are even available primed!
   http://www.rvow.com/

TTI Armory
   TTI Armory is the premier developer and manufacturer of specialty ammunition. Specializing in 50BMG, subsonic and match ammunition for recreational, competition and tactical applications, TTI caters to the professional shooter.
   http://www.ttiarmory.com

The Ferret50
   A 50BMG bolt-action rifle conversion for the AR-15.
   http://ferret50.com