I have looked everywhere and I cant find a .54 hawken rifle or a .62 caliber green mountain barrel. Anybody know where I can find one? I found a .54 caliber hawken on gunbroker for under $200 but I am nervous about buying used guns, especialy a muzzloader. I am wanting to shoot deer with the .54 caliber and then switch out barrels and shoot squirrels with the smoothbore .62 caliber barrel packed with buckshot.