Federal Lake City 5.56 XM855 62gr Green Tip 20/box

First run, first quality product manufactured at Lake City Army Ammunition Plant for the U.S. Government to NATO specifications. Specifications: Case: Brass (Copper Alloy No. 260) Primer: M41 Operating Range: (-40 degrees to +125 degrees F) Primer Sealant: Water resistant lacquer Case Mouth Sealant: Yes Headstamp: Each loaded cartridge shall be headstamped with the manufacturer's symbol and year of manufacture Warning: For use in standard 5.56 mm chambers. Do not use in non-standard 5.56 chambers.