Hornet

"The Shotlite Hornet is the stealth sniper weapon for those needing good stopping power with extreme mobility." - Official description

Due to Hornet being the only sniper rifle to be full auto, it's is more like a high power assault rifle. It is evidently extremely powerful without augments, and is such fairly rare to obtain. Just like the description says, it is very mobile, the most mobile sniper rifle in the game and is even more mobile than some SMG's and pistols such as the CM 307, the RONSON 55, and the Trailblazer.

Recommenced augments are deadly for extreme killing power, overclocked for even more killing power, capacity for more time spent shooting/less time spent reloading overall; if you plan on making this your secondary weapon or a last resort, you probably would then give it pierce, for a total of 8 zombies in one shot. But, there is really no reason to NOT use it as a primary unless you have a extremely powerful weapon. The [RED] version is mind-bogglingly strong at 1,850 damage per shot while retaining the 6 RPS full auto. It is here getting deadly or overclocked is pretty much a requirement to make the absolute best of the weapon.