The PMC X-Tac Rifle Ammunition 5.56mm 62GR Green Tip 20 Rounds is a reliable choice for outdoor enthusiasts. This centerfire ammunition is designed for use in AR-15 rifles and features a lead and steel core, brass jacketed projectile with a light armor piercing capability. The M855/SS109 bullet type provides increased stability and accuracy, making it suitable for range training or hunting. With a muzzle velocity of 3100 fps from a 20" barrel, this ammunition delivers consistent performance. Fast shipping ensures that you can get back to your outdoor activities quickly. PMC's commitment to adhering to military and law-enforcement specifications guarantees that this ammunition will perform when needed. Product Features and Specifications: Caliber: 5.56 NATO Category: Centerfire Bullet Type: M855/SS109 Bullet Weight: 62 Grains Muzzle Velocity: 3100 fps (from a 20" Barrel) Muzzle Energy: 1323 ft/lbs Bullet Ballistic Coefficient: .243 Casing: Reloadable Brass Primer: Non-Corrosive