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 mated to a Black Nitride treated Mil-Spec bolt carrier group with MPI inspected Carpenter 158 bolt for impressible long-term reliability. Available in 5.56 NATO, 300 Blackout or 300 HAM’R calibers only in carbine or pistol version-The PROTECTOR will become your top choice when effective self-defense is a top priority. Caliber: 300 HAM'R Barrel Length: 16" Overall Length: 33" Weight Empty: 6lbs, 1oz Billet Upper and Lower Receivers Wilson Combat Protector Match Grade Barrel Mid Length System with Lo-Profile Gas Block Threaded Muzzle with Q-Comp Muzzle Device Wilson Combat M-LOK Rail Bravo Company Pistol Grip Rogers/Wilson Super-Stoc Wilson Combat TTU (Tactical Trigger Unit) M2, 4# Premium Mil-Spec Bolt and Bolt Carrier, Nitride Coated Armor-Tuff Finish NOTE: All serialized items must be shipped to an Federal Firearms License (FFL) dealer. One of our customer satisfaction representatives will contact you to arrange shipment of your serialized item.