These cases are marked NR (Not Reloadable). Do not use in carbine style firearms. Use in Carbine rifles can result in firearm damage and/or serious injury. Blazer 9mm ammunition is a great alternative to reduce the cost of practice shooting, while still giving shooters the quality and reliability they need. If you want great, dependable ammunition, without the high-end cost, this 9mm ammo from Blazer is your best choice. The cases are made from aircraft-grade aluminum, which is heat-treated and provides the same great performance of brass-case ammo at a more economical price. Loaded with quality bullets and reliable ignition primers Greatly reduces the cost of practice Product Specifications Caliber: 9MM Bullet Type: Full Metal Jacket Bullet Weight: 115 GR Case Type: Aluminum Rounds/box: 50 Rounds Per Box