LAX Ammunition 223 Rem 55 gr Full Metal Jacket (FMJ) New 250 ct w/ FREE Ammo Can   ($3.99 Shipping on orders $200-$2000!)

Average Velocity: 3200 fps

The .223 Remington cartridge and 55 grain projectile is by far the most widely used round for the AR-15 platform. This full metal jacket round is capable of firing in barrels labeled as 5.56x45mm NATO, .223 Rem, and .223 Wylde. On top of that, the projectile is the ideal weight for a wide range of barrel twist rates, 1-in-7, 1-in-9, and 1-in-8, are just a few examples of barrels that this round run accurately with. 

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