THOMPSON/CENTER ARMS Bone Collector Blackpowder Rifles   This .50 caliber powerhouse is available with a composite stock in dark gray/Weather Shield or in Realtree AP camo/Weather Shield. Reversible hammer extension. 28" fluted Weathershield barrel with QLA Muzzle System. Power Rod Ramrod. Tip up barrel with toggle lock action. Fiber optic sights. sling swivel studs. Sims Limbsaver recoil pad.   SPECIFICATIONS:   Action :Break Open Action  Caliber :50 CAL Black Powder  Barrel Length :28"  Sights :Fiber Optic  Ignition :209 Primer