PPU manufactures Many Calibers Of Brass Cased Blank Cartridges. Most Are "Full Cased" Which Means They Have An Extended Case Shaped Similar To a Loaded Round. This provides Reliable functioning In All Types Of Weapons. This 7.62X39mm Blank Comes In a Pack Of 15 rounds Per Box, 96 Boxes Per Case. Note: A Correct Blank Firing Adapter Must Be Used On The Gun To Ensure Semi Or Full Automatic Operation.