COLE-54-C-10 Barrel, .54 caliber, 15/16" octagon, 10", 1-20" twist, 1.5 lb, crowned, 5/8-18 thread, by Colerain

COLE-54-C-36 Barrel, .54 caliber, 15/16" octagon, 36", 1-56" twist, 4.9 lb, crowned, 5/8-18 thread, by Colerain

COLE-54-C-42 Barrel, .54 caliber, 15/16" octagon, 42", 1-56" twist, 5.1 lb, crowned, 5/8-18 thread, by Colerain

COLE-54-D-36 Barrel, .54 caliber, 1" octagon, 36", 1-56" twist, 5.8 lb, crowned, 3/4-16 thread, by Colerain

COLE-54-D-42 Barrel, .54 caliber, 1" octagon, 42", 1-56" twist, 6.9 lb, crowned, 3/4-16 thread, by Colerain

COLE-54-F-36 Barrel, .54 caliber, 1-1/8" octagon, 36", 1-56" twist, 8.2 lb, crowned, 3/4-16 thread, by Colerain

COLE-54-GA-C Barrel, .54 caliber, Golden Age, 42" swamped, "C" profile, 1-56", 5.0 lb, flared tang plug, by Colerain

COLE-54-IH-C Barrel, .54 caliber, Issac Haines, 38" swamped, "C" profile, 1-56", 4.2 lb, flared tang plug, by Colerain

COLE-58-D-36 Barrel, .58 caliber, 1" octagon, 36", 1-66" twist, 5.5 lb, crowned, 3/4-16 thread, by Colerain

COLE-58-D-42 Barrel, .58 caliber, 1" octagon, 42", 1-66" twist, 6.5 lb, crowned, 3/4-16 thread, by Colerain