Re: Long Range AR15 Complete Upper
My long range AR15 has a rock river arms 20 inch upper. It shoots tighter than most people can hold. White oak armament is another outfit that builds good stuff for a fair price. Barrel length is strictly personal preference. the extra length will get your more speed but it won't get you any more accuracy. whether or not that extra speed will do you any good depends on what you want your rifle to do. Either one of these companies have stuff from 16 to 24 inches.
.308 Howa 1500, 24" varmint barrel, Harris bipod Bell & Carlson MkII tactical stock. 4-14x50 tactical scope from Wonder Optics.