HUNTERTOWN ARMS PS90 BARREL SHROUD •Silencer-friendly barrel shroud features 1/2-28 thread for attaching any 5.56mm or .22 cal. silencer made by any manufacturer rated for the 5.7x28mm •Thread Depth: 0.625 (std. for 5.56 silencers) •NOTE: Spacers (or washers) may be needed for attaching .22 silencer w/0.400 thread depth
