F Guntec USA AR .308 Slip Over Barrel Shroud w/Multi Port Muzzle Brake, Black, 1326-MB-P-308 $42.59 1326MBP308 show more like this Dvor F GunTec Muzzle Brake with Long Slip-Over Barrel Shroud AR-10, LR-308 5/8x24 Thread Steel Matte - 604893" $49.99 1326-MB-P-308 show more like this 5.00 MidwayUSA