I’m not sure you can find a better option that this model 20 Short from New Ultra Light Arms. It is chambered for the .30 Remington AR cartridge which will push a 150 grain Nosler Accubond to 2600 fps from the 20 inch barrel. Total rifle weight with the 1.5-5X Leupold and four cartridges is 4 pounds, 11 ounces. If you want a little more power, consider a model 20, maybe in 6.5 – .284, .308 Winchester or even .358 Winchester. That rifle will weigh an ounce or two more but should still come in under five pounds with the same riflescope. Regardless, all New Ultra Light Arms rifles come standard with an exceptional Timney Trigger, adjusted to your desired pull weight.