https://vizardsgunsandammo.com/trz-ppn55651-5-56x45-m193-20-50/

PPU PPN5561 5.56X45 M193 20/50
Mfg Item Num: PPN5561
Model Number: Mil-Spec
Series: M193
Unit of measure: BX
Caliber: 223 Remington/5.56 NATO
Bullet Type: Full Metal Jacket Boat Tail
Bullet Weight: 55 GR
Muzzle Energy: 1282 ft lbs
Muzzle Velocity: 3240 fps
Rounds Per Box: 20
Casing Material: Brass