Ignition is totally enclosed.
Gravity pulls powder into nipple drum.
Ideal for hunting. Fragmentation Safety and Security. Genuine Hardwood Thumbhole, 'Perfect Balance' For greater accuracy Featuring a Patented Internal Percussion Ignition System. The PRA percussion ignition system has revolutionized muzzleloading firearms with a patented design that contains the firing mechanism entirely within the gun stock. 2.The shooter receives maximum protection from flying bits of metal in the event of a percussion fragmentation.