Product Description Winchester Ammo M193 delivers dependable 5.56 performance for training, range time, and general target shooting. This M193-spec 5.56x45mm NATO load features a 55-grain Full Metal Jacket (FMJ) projectile designed for consistent feeding and reliable function. Packaged as a convenient high-volume bulk box, it&&';;s a practical choice for AR-15 and other 5.56 NATO-chambered rifles. Product Highlights 5.56x45mm NATO M193 load with a 55gr Full Metal Jacket (FMJ) bullet for range and target use 500-round bulk box packaging for high-volume training and practice sessions Brass cases with Boxer primers for reliable ignition and smooth cycling Non-corrosive, reloadable centerfire rifle ammunition Made in the USA Specs Brand: Winchester Ammo Manufacturer Part Number: WM193500 UPC: 020892228320 Cartridge: 5.56x45mm NATO (5.56mm) Series/Type: M193 Bullet Weight: 55 gr Bullet Type: Full Metal Jacket (FMJ) Case Material: Brass Primer Type: Boxer Corrosive: No Reloadable: Yes Rounds Per Box: 500 Boxes Per Case: 2 Country of Origin: USA Disclaimer: 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.