BBL-54-C-42 Barrel, .54 caliber, 15/16" octagon, 42", 1-66" twist, 5.8 lb, crowned, 3/4-16 thread for breech plug, made in the U.S.A.

BBL-54-C-GPR-32-B Great Plains Rifle Drop-in Barrel Assembly, .54 caliber, 1-60" twist, 15/16" octagon, 32" length, blued, includes tang, percussion ignition for Lyman Great Plains, and Investarm Gemmer Hawken

BBL-54-C-GPR-32-BF Great Plains Rifle Drop-in Barrel Assembly, .54 caliber, 1-60" twist, 15/16" octagon, 32" length, blued, includes tang, flintlock ignition for Lyman Great Plains, Investarm Gemmer Hawken

BBL-54-C-INV-28-B Investarm Hawken Rifle Drop-in Barrel Assembly, .54 caliber, 1-48" twist, 15/16" octagon, 28" length, blued, includes tang, percussion ignition for Investarm Bridger Hawken & Cabela's Hawken

BBL-54-D-36 Barrel, .54 caliber, 1" octagon, 36", 1-66" twist, 5.9 lb, crowned, 3/4-16 thread for breech plug, made in the U.S.A.

BBL-58-42 Barrel, .58 caliber, 42" octagon-to-round, 1-66" twist, round bottom rifled, crowned, threaded for 3/4-16 plug

BBL-58-D-36 Barrel, .58 caliber, 1" octagon, 36", 1-66" twist, 5.6 lb, crowned, 3/4-16 thread for breech plug, made in the U.S.A.

BBL-FOWL-20-44 Barrel, 20 gauge, Fowler, .620" smooth bore, 44" octagon-to-round, "C" profile, 4.2 lb, flared tang plug, made in the U.S.A.

COLE-20-38 20 gauge, Fowler, 38" octagon-to-round, "C" profile, 3.64 lb, flared tang plug, by Colerain

COLE-40-A-36 Barrel, .40 caliber, 13/16" octagon, 36", 1-48" twist, 4.2 lb, crowned, 5/8-18 thread, by Colerain