The Bluegrass Armory Viper is available chambered in .50 BMG as well as .510 DTC EUROP, and is available in left or right hand configuration.
The Viper is manufactured using state of the art Wire EDM machines, CNC Milling and Lathe Systems, which allow Bluegrass Armory to hold each and every firearm to exacting; specifications.
Using this innovative technology, they have been able to make major improvements over other large caliber rifles, including a 30 M.O.A. Picatinny style rail milled directly on the receiver (not bolted down), and a gun that features no welded parts or components.
In the hands of the right shooter the Viper is easily capable of much less than 1 minute of angle of accuracy.
Also in the event you are interested, all of these gun documents I am posting can be found on the disk I have listed to your left. Additionally to the hundreds of documents I have posted, I have hundreds of gun patents (mostly suppressors) as well as class PowerPoints and targets. all for $5.