Desert Tech HTI

The Desert Tech Hard Target Interdiction (HTI) is a bullpup bolt-action sniper and anti-materiel rifle designed and manufactured in West Valley City, Utah, United States by Desert Tech (formerly Desert Tactical Arms).
Design.
The Desert Tech HTI made its first public debut at Shot Show 2012 as a modular multi caliber bullpup Sniper Rifle.
The design of the HTI is largely based on the SRS-A1, scaled up to handle larger cartridges. It is made out of high-impact polymers, aircraft grade aluminum (7075-T6), ultra high-strength steels, and durable coatings. These materials make the firearm 12 pounds lighter, 12 inches shorter, and far more accurate than the comparable US M82A1 and M107 50 BMG rifles, in the same caliber, currently in service with various military's around the world. 
Barrels on the HTI can be changed within 60 seconds, allowing the chambering to be easily changed or worn out barrels to be quickly replaced. The chamberings currently available from Desert Tech are .375 Cheyenne Tactical (CheyTac), .408 CheyTac, .416 Barrett and .50 BMG.
The bullpup design means the action is behind the trigger. As with all bullpups, this allows for a shorter overall length, without having to reduce barrel length.
Resulting off the shelf ammunition accuracy tests of the Desert Tech HTI firearm show between 0.549 MOA and 1.751 MOA depending on ammunition used.