
Availability: In Stock
Current Stock: Out of stock
Frontier Cartridge Military Grade 5.56x45mm NATO XM193 55 Grain FMJ-BT ammunition is a versatile, American-made round built for shooters who demand reliability across multiple applications. Whether you're running high-volume range sessions, zeroing a hunting rifle, or training with an AR-platform gun, this straightforward FMJ load delivers consistent performance without the fuss. The 55-grain full metal jacket bullet is a proven design that feeds reliably, shoots clean, and works in pretty much any 5.56 NATO chamber you'll encounter.
These rounds come in brass cases with military-grade boxer primers—the kind of construction that lets you reload if you're so inclined, and that makes them suitable for function testing, duty training, or high-round-count practice days. Frontier Cartridge's reputation rests on state-of-the-industry loading and quality control, so you get the same reliable ignition and consistent velocities in round 500 that you got in round 1. No surprises, no flyers you can't explain.
The XM193 spec is the mil-surplus profile—a mil-standard load that's been proven in actual use for decades. It's not a match round, and it's not a premium hunting load, but it's exactly what it claims to be: dependable, affordable ammunition that handles training, practice, and general-purpose shooting without compromise. If you shoot 5.56 and you shoot a lot, Frontier keeps your ammunition can full without breaking the bank.
| Cartridge | 5.56x45mm NATO |
| Bullet Weight | 55 grains |
| Bullet Type | Full Metal Jacket-Boat Tail (FMJ-BT) |
| Case Material | Brass |
| Primer | Boxer (military-grade) |
| Load Spec | XM193 (military standard) |
| Intended Use | Target shooting, training, general-purpose practice |
Yes. The XM193 specification is the standard military 5.56x45mm NATO load, and it will function in any rifle chambered for 5.56 NATO. It's a mil-spec round designed for broad compatibility across AR platforms and other 5.56 firearms.
Yes. The ammunition comes in brass cases with boxer primers, which is the standard setup for hand reloading. After firing, you can process, resize, reprime, and reload them as part of your reloading practice.
This is a no-frills, high-volume training and practice round. The 55-grain FMJ is proven and reliable but designed for function and value, not precision or specialized terminal performance. It's ideal for shooters who prioritize consistency and affordability for high round counts, not match-level accuracy or specific hunting applications.
Per the manufacturer's specifications, Frontier Cartridge loads this ammunition for law enforcement training applications, among others. However, for actual self-defense or duty use, consult your agency or training directive regarding approved ammunition specifications.

SKU: 119717980 • Width: 4.1in • Height: 3.8in • Depth: 5in • Weight: 3.9oz





Availability: In Stock
Current Stock: Out of stock
Frontier Cartridge Military Grade 5.56x45mm NATO XM193 55 Grain FMJ-BT ammunition is a versatile, American-made round built for shooters who demand reliability across multiple applications. Whether you're running high-volume range sessions, zeroing a hunting rifle, or training with an AR-platform gun, this straightforward FMJ load delivers consistent performance without the fuss. The 55-grain full metal jacket bullet is a proven design that feeds reliably, shoots clean, and works in pretty much any 5.56 NATO chamber you'll encounter.
These rounds come in brass cases with military-grade boxer primers—the kind of construction that lets you reload if you're so inclined, and that makes them suitable for function testing, duty training, or high-round-count practice days. Frontier Cartridge's reputation rests on state-of-the-industry loading and quality control, so you get the same reliable ignition and consistent velocities in round 500 that you got in round 1. No surprises, no flyers you can't explain.
The XM193 spec is the mil-surplus profile—a mil-standard load that's been proven in actual use for decades. It's not a match round, and it's not a premium hunting load, but it's exactly what it claims to be: dependable, affordable ammunition that handles training, practice, and general-purpose shooting without compromise. If you shoot 5.56 and you shoot a lot, Frontier keeps your ammunition can full without breaking the bank.
| Cartridge | 5.56x45mm NATO |
| Bullet Weight | 55 grains |
| Bullet Type | Full Metal Jacket-Boat Tail (FMJ-BT) |
| Case Material | Brass |
| Primer | Boxer (military-grade) |
| Load Spec | XM193 (military standard) |
| Intended Use | Target shooting, training, general-purpose practice |
Yes. The XM193 specification is the standard military 5.56x45mm NATO load, and it will function in any rifle chambered for 5.56 NATO. It's a mil-spec round designed for broad compatibility across AR platforms and other 5.56 firearms.
Yes. The ammunition comes in brass cases with boxer primers, which is the standard setup for hand reloading. After firing, you can process, resize, reprime, and reload them as part of your reloading practice.
This is a no-frills, high-volume training and practice round. The 55-grain FMJ is proven and reliable but designed for function and value, not precision or specialized terminal performance. It's ideal for shooters who prioritize consistency and affordability for high round counts, not match-level accuracy or specific hunting applications.
Per the manufacturer's specifications, Frontier Cartridge loads this ammunition for law enforcement training applications, among others. However, for actual self-defense or duty use, consult your agency or training directive regarding approved ammunition specifications.
SKU: 119717980 • Width: 4.1in • Height: 3.8in • Depth: 5in • Weight: 3.9oz
