https://vizardsgunsandammo.com/copy-of-winchester-ammo-q3131ky-usa-5-56x45mm-nato-55-gr-full-metal-jacket-lead-core-fmjlc-20-rounds/

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Winchester USA White Box stands for consistent performance and outstanding value offering high-quality ammunition to suit a wide range of hunter's and shooter's needs.

Mfg Item Num: Q3131KY
Model Number: USA
Unit of measure: BX
Caliber: 5.56x45mm NATO
Bullet Type: Full Metal Jacket Lead Core (FMJLC)
Bullet Weight: 55 gr
Muzzle Energy: 1306 ft lbs
Muzzle Velocity: 3270 fps
Rounds Per Box: 20
Casing Material: Brass