Magtech’s First Defense 5.56 NATO load (brand part no. 556B) sends a 62-grain full metal jacket (FMJ) bullet downrange, built to the M193-style ball profile that has run through AR-platform rifles for decades. The bullet is a ball-style FMJ, so it holds together and penetrates rather than expanding, which keeps function smooth in gas guns that can be picky about bullet profile. Magtech loads it in brass cases, chambering safely in rifles marked for either .223 Remington or 5.56x45mm. It is built for the high round counts of training days, competitive shooting, and steady range practice rather than a specialty defensive role. In rifle ammunition for AR-platform shooters, this M193-style load is a dependable, no-surprises choice.
Key Specifications
- The chambering is .223 Remington/5.56 NATO, safe to fire in rifles marked for either cartridge.
- The bullet weighs 62 grains, matched to the M193-style ball profile common in AR-platform rifles.
- The bullet type is full metal jacket, holding together through the target instead of expanding for reliable function.
- The case material is brass, supporting smooth extraction across semi-automatic actions.
- The cost per round runs about $0.55, priced for training and high-volume range use.
- Each box holds 50 rounds, a practical amount for a range session without constant reloading of magazines.
- The load suits training and competitive shooting, standing up to the high round counts both demand.
Frequently Asked Questions
Can this ammunition be fired in a .223 Remington rifle? Yes, 5.56x45mm ball ammunition is safe to fire in rifles chambered in either .223 Remington or 5.56 NATO.
Is this a hollow point or a ball round? It is a 62-grain full metal jacket ball bullet, not an expanding hollow point.
What is this ammunition best suited for? Its M193-style ball profile makes it well suited for training, plinking, and competitive shooting rather than specialized defensive use.
Buy Magtech First Defense 5.56 NATO 62gr FMJ
AR-platform rifles run best on ammunition that feeds without drama, and this M193-style ball load has that reputation for a reason. Stock the range bag before your next training day or match. Order from our Lubbock, Texas gun shop and it ships fast to your door.
