want to build first 300 blk out pistol . have 10.5" 556 and 16" 300 blk out but want a 9.5-10.5" to run with can to shoot 50-150yds for hog\varmit hunting instead of carrying around scar 17 with can and thermal . shot show week will have lots of deals and want to make sure I order something . any ideas on what brand barrel? stainless? looking at Superlative arms adjustable gas block. most uppers I want with 1:7 twist assembled don't come with adj gas blocks . I don't know what m lock guard either or upper . trying to keep searching web killing me and wanted some advice without getting slammed for not being an expert
thanks
thanks