Winchester USA 5.56 NATO M855 Green Tip 62GR FMJ 200RD CaseThe Winchester USA 5. 56 NATO M855 Green Tip 62GR FMJ is engineered for tactical use, featuring a steel core FMJ bullet for deep penetration through barriers. Its brass casing ensures reliable feeding in AR platforms, while the 200RD case provides ample rounds for training or defense scenarios. Features Specs: Caliber: 5. 56 NATO Bullet Weight: 62gr Bullet Type: FMJ (Full Metal Jacket) with steel core Velocity: 3,000 fps Energy: 1,300 ft lbs