T/c drop in barrel assembly 50 cal. With 1/66 twistb15/16 octagon by 32 inch 5.5lb blued percusion for thompson center hawken rifle. Has williams rear sight is adjustable for windage and elevation and has 3/8 hickory ramrod. Has been shot about 20 times still like new condition thanks. The item “Thompson center hawken drop in barrel 1/66 twist” is in sale since Thursday, June 21, 2018. This item is in the category “Sporting Goods\Hunting\Vintage Hunting\Black Powder”. The seller is “tommysyardsales” and is located in Princess Anne, Maryland. This item can be shipped to United States.