TacSol Tsar-300 Upper

Mil-spec bolt carrier group. Pistol length gas system. Bore length is eleven inches with a permanently attached shroud for an overall length of 16.1 inches. Allows for a .30 caliber suppressor to fit inside the shroud. Includes TacSol two piece free floating XG-Pro nine-inch handguard machined from billet aluminum and a ten round magazine. 1:8 inch twist rate. Threads: 5/8x24. Maximum outside diameter for suppressor to attach is 1.75 inches. Minimum suppressor length: 6.5 inches. Note: Not all .30 caliber suppressors are compatible. Suppressor cannot require access to the threads to detach/attach.