When you need to adjust the trigger pull or function test a rifle, reach for precision machined snap caps from A-Zoom. They will allow you to release the firing pin without fear of damage. They are also ideal for practicing offhand dry firing and smooth bolt cycling. Made of aluminum and plastic, these snap caps will last for years. The blue color makes them stand out and differentiate them from live ammo.Specifications: Manufacturer Number: 15315 Caliber: .45 Auto Materials: Aluminum and Plastic Color: Blue Pack of ten snap caps