alpha shooting sports has a selection of 300 BO barrels.
16"s shorties some of them nitirded or stainless.
i have bought a few 5.56 barrels from them in the past, i wish i had bought some of their stainless steel 5.45 and 7.62x39 barrels before they went up.
anyway $100 for a 300BO shortie seems like a deal for those building that quiet can project.
you have to enter a code to get the $100 price 300 Black Out
they have other 300BOs for the regular price of $159
10.5" 300 Blackout pistol barrel