Barrels and choke tubes shape what your gun can do. Drop-in replacement barrels renew accuracy or change a pistol or rifle's setup, with precision options from makers like Noveske and Tactical Solutions. Choke tubes tune a shotgun's pattern to the job — full and modified for reach, improved cylinder and skeet for close work, specialty turkey and waterfowl constrictions for the season. Match the barrel to your exact model and the choke to your shotgun's choke system before ordering.