BBL-45-B-42 Barrel, .45 caliber, 7/8" octagon, 42", 1-66" twist, 5.5 lb, crowned, 5/8-18 thread for breech plug, made in the U.S.A.

BBL-45-C-42 Barrel, .45 caliber, 15/16" octagon, 42", 1-66" twist, 6.6 lb, crowned, 5/8-18 thread for breech plug, made in the U.S.A.

BBL-45-C-GPR-32-B Great Plains Rifle Drop-in Barrel Assembly, .45 caliber, 1-48" twist, 15/16" octagon, 32" length, blued, includes tang, percussion ignition for Lyman Great Plains, Investarm Gemmer Hawken

BBL-45-C-GPR-32-BF Great Plains Rifle Drop-in Barrel Assembly, .45 caliber, 1-48" twist, 15/16" octagon, 32" length, blued, includes tang, flintlock ignition for Lyman Great Plains, Investarm Gemmer Hawken

BBL-45-C-INV-28-B Investarms Hawken Rifle Drop-in Barrel Assembly, .45 caliber, 1-48" twist, 15/16" octagon, 28" length, blued, includes tang, percussion ignition for Investarm Bridger Hawken & Cabela's Hawken

BBL-50-B-36 Barrel, .50 caliber, 7/8" octagon, 36", 1-66" twist, 4.6 lb, crowned, 5/8-18 thread for breech plug, made in the U.S.A.

BBL-50-B-42 Barrel, .50 caliber, 7/8" octagon, 42", 1-66" twist, 5.1 lb, crowned, 5/8-18 thread for breech plug, made in the U.S.A.

BBL-50-C-36 Barrel, .50 caliber, 15/16" octagon, 36", 1-66" twist, 5.3 lb, crowned, 5/8-18 thread for breech plug, made in the U.S.A.

BBL-50-C-42 Barrel, .50 caliber, 15/16" octagon, 42", 1-66" twist, 6.2 lb, crowned, 5/8-18 thread for breech plug, made in the U.S.A.

BBL-50-C-GPR-32-B Great Plains Rifle Drop-in Barrel Assembly, .50 caliber, 1-60" twist, 15/16" octagon, 32" length, blued, includes tang, percussion ignition for Lyman Great Plains, Investarm Gemmer Hawken