Frontier Cartridge 5.56 NATO 55gr FMJ FM193 – 20 Rounds

Frontier Cartridge 5.56 NATO 55-grain FMJ in the FM193 load delivers consistent M193-equivalent performance for high-volume range training and tactical practice. Manufactured at the Lake City Army Ammunition Plant using military-spec components, this load replicates the velocity and ballistics of standard M193 ball ammunition. The full metal jacket projectile provides reliable feeding in AR-15 and M16-pattern rifles, with clean ignition and accuracy suitable for zero confirmation and fundamentals work.

This ammunition is loaded in reloadable brass cases with Boxer primers. Available in 20-round boxes or 500-round cases for sustained training cycles. Optimized for 16-inch and 20-inch barrels with 1:7 to 1:9 twist rates.

• Caliber: 5.56 NATO
• Bullet Weight: 55 grains
• Bullet Style: Full Metal Jacket (FMJ)
• Muzzle Velocity: ~3,240 fps (20-inch barrel)
• Box Count: 20 rounds
• Case Count: 500 rounds (25 boxes)
• Case Type: Reloadable brass
• Primer: Boxer
• Use: Range training, target shooting