Product DescriptionWinchester Ammo USA Lake City M193 (WM193100) is 5.56mm/5.56x45mm rifle ammunition built for dependable range performance. This load features a 55-grain Full Metal Jacket (FMJ) bullet in a brass case and is packaged as a 100-round range pack, with 10 boxes per case for convenient bulk stocking. With consistent ballistics and reloadable brass (boxer-primed), it's a solid choice for training, drills, and general target shooting.Product Highlights 5.56mm / 5.56x45mm M193-style load with 55gr Full Metal Jacket (FMJ) bullet for range and training use 100-round range pack for fewer box changes during longer shooting sessions Brass-cased, boxer-primed construction for reliable function and reloadability Published muzzle velocity around 3180 FPS (varies by firearm/barrel length) Bulk-friendly case configuration: 10 boxes per caseSpecs Brand: Winchester Ammo Manufacturer Part Number: WM193100 UPC: 020892229020 Cartridge/Caliber: 5.56mm / 5.56x45mm Bullet Weight: 55 grain Bullet Type: Full Metal Jacket (FMJ) Case Material: Brass Primer: Boxer Muzzle Velocity: 3180 fps Muzzle Energy: 1235 ft-lbs Rounds Per Box: 100 Boxes Per Case: 10 Country of Origin: USADisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.