The normal SMG employs a 10.5 inch barrel with the typical “hen cage” flash suppressor and standard carbine handguards. The barrel provides a chrome lined bore and chamber. The barrel is likewise produced in sixteen-inch length to the professional/LE carbines. If the Place of work of Protected Transportation required to https://colt-9mm-upper67500.blogitright.com/26698117/the-colt-10-5-inch-9mm-smg-upper-receiver-assembly-diaries