Description Helenius APH RP99 in .50 BMG single shot pistol with a 15″ barrel with ported muzzle break. Made in Finland. Laminated wood pistol grip stock. Polished stainless steel trigger, breech door, receiver and barrel. Rear breech located safety button. Rear adjustable and front fixed blade sight. Rear breech loaded like a cannon. Must ship to a FFL holder. Condition: Very Good/Excellent with light scuffs and handling wear. Clean rifled bore. Barrel Length: 15″ Serial: 1199 Manufacturer: Helenius APH Caliber: .50 BMG Model: RP99 Book# 10-626