New Ultralight Arms Light Mountain Rifle in 7mm-08 Remington. The Light Mountain Rifle in 7mm-08 represents perhaps the optimal combination in the NULA line — a cartridge with enough power for elk at moderate ranges, mild enough recoil to be comfortable in an ultralight platform, and excellent bullet selection. Forbes' sub-5-pound Light Mountain Rifle in 7mm-08 is the rifle that serious backcountry elk hunters dream about. Type: Rifle Action: Bolt-Action Caliber: 7mm-08 Remington Capacity: 1 Year introduced: 2005, USA Weight: 48 oz Overall length: 40" Status: Active Intended use: hunting, mountain hunting