M8A1 M8 Bayonet Sheath Only fits M4 M5 M6 M7 AR-15 M1 Carbine M-1 Garand Knife M8A1 style Bayonet Sheath Unmarked no packaging, knife not included Overall sheath size: 15" tall Fits blade up to 6 3/4" long ~ Opening measures 15/16" wide Will work for any bayonet that fits, but made for the US M4, M5. M6, M7