Sterling 5.56 M193 55gr FMJ 300 Rounds

The Sterling 5.56 M193 55gr FMJ 300 Rounds ammunition is built for shooters who demand reliable, affordable training and practice rounds for AR-15 platforms and other 5.56 NATO-compatible rifles. This cartridge has become the standard for military, law enforcement, and civilian marksmanship due to its consistent ballistics, proven reliability across thousands of platforms, and cost-effective performance. Whether you're running qualifications, zero drills, or high-volume range work, the M193 specification delivers the predictable velocity and trajectory needed for accurate, repeatable shooting.

Sterling's M193 loading uses a 55-grain full metal jacket projectile seated on a 5.56 NATO case with military-spec powder and primer, generating approximately 3,240 feet per second from a 20-inch barrel. The full metal jacket construction reduces fouling compared to bare-lead rounds and ensures reliable feeding through both direct impingement and piston-driven systems. At 55 grains, this load represents the original NATO specification dating to the Vietnam era—a proven formula that provides flat trajectory to 300 yards and adequate energy for target work, training, and qualification courses.

Law enforcement academies, military training units, and civilian shooters benefit most from bulk quantities like this 300-round case due to lower per-round cost and reduced resupply logistics. The M193 performs identically across mil-spec and commercial AR variants, including carbines with 16-inch barrels and full-length rifles. Shooters running suppressed systems should note that 5.56 M193 operates at supersonic velocity, making it suitable for standard and sound-suppressed fire. This case quantity is ideal for quarterly quals, transition training, or building a rotating ammunition reserve for duty or competition readiness.