Wilson Combat Protector, Semi-automatic, AR, 223 Rem/556NATO, 16 Barrel, Black Armor Tuff Finish, 30Rd TR-PC-556-BL The PROTECTOR series AR carbine and pistols from Wilson Combat have been designed from the ground up to offer true rifle performance in a Tactical AR package. The heart of every PROTECTOR is our Wilson Combat Match-Grade precision button rifled barrel-renowned in the firearms community as one of the most accurate AR barrels on the market that is matched up with a premium bolt carrier assembly.