Green Mountain IBS (Interchangable Barrel System) for Thompson Center Drop In 45 cal, New old stock. Barrel measures 1″ ATF x 32″ so will fit the TC 54 cal Hawken or Renegade stock. I don’t believe they make these anymore. Barrel is in the white with no sights. Bolts for under rib, under lug, and [ Read On… ]
Related Topics: barrel, center, drop, green, mountain, muzzleloader, thompson