GenIII AR15/M16 Round Free Float Carbon Fiber Forearm, Rifle length, Natural finish. The carbon fiber forearm is light weight high strength and also reduces the amount of heat transferred to the shooter during rapid fire.
This Gen III forearm in Natural Finish comes with 4 rails, 1 8.5" rail on top and 3- 3" rails at 3,6 and 9 O'clock postions. The forearm is constructed of wrapped carbon fiber, with an aluminum barrel nut and collar. Total length of the forearm is 12.5" and weights 16.5oz. including barrel nut. The clearance from the center line of the barrel to the underside of the forearm is .78". The inner diameter of the barrel nut is 1.020" Custom barrel nuts with larger ID for larger diameter barrels can be made.