New Ultralight Arms Light Mountain Rifle in 308 Winchester. The Light Mountain Rifle in 308 Win is the most versatile configuration in the NULA ultralight line — standard cartridge, widespread ammunition availability, and a finished weight under 5 pounds. Recoil is noticeable given the light weight but manageable with proper technique. For mountain hunters who value versatility and want one rifle for everything from deer to elk in the backcountry. Type: Rifle Action: Bolt-Action Caliber: 308 Winchester Capacity: 1 Year introduced: 2005, USA Weight: 50 oz Overall length: 41" Status: Active Intended use: hunting, mountain hunting