The regular SMG employs a 10.five inch barrel With all the standard “hen cage” flash suppressor and normal carbine handguards. The barrel incorporates a chrome lined bore and chamber. The barrel is usually produced in sixteen-inch length with the industrial/LE carbines. The better part is, You should utilize 9mm Journals https://colt105upper42851.like-blogs.com/26448088/an-unbiased-view-of-colt-10-5-inch-9mm-smg-upper-receiver-assembly