PMC X-TAC 5.56 NATO 62 GREEN TIP M855/SS109. LAP (LIGHT ARMOR PENETRATOR) ROUNDS. 1000 Round Case Caliber: 5.56mm NATO Bullet Weight: 62 Grain  Bullet Style: M855/SS109 Steel Penetrator Muzzle (Velocity): 3100 (feet/second) Muzzle (Energy): 1323 (foot/pounds.) Bullet Casing: Brass, Reloadable Manf. Part #: PMC556K SOLD OUT