Looking to swap barrel and bolt for 6.8 AR build. Would like a 16" and will be supp. Why is it that most of the names of barrels in the threads are asterisks?! Does a company have to be a site sponsor to be mentioned? Looking for accurate barrel for hog and varmints. Specifics appreciated as many manufactures have a wide selection and I haven't a clue. Bolt suggestions as well as magazines and where to buy. Thanks!