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Maxim Defense engineered this 5.56 NATO load specifically for the challenges short-barrel rifles face. When you run a carbine or SBR, you're working with less velocity than a standard 16-inch barrel delivers. That means traditional expanding and fragmenting ammunition doesn't always work as designed. The MXM-49002 solves this problem with Tumble Upon Impact technology, which causes the projectile to tumble through the target instead of relying solely on expansion, delivering shock and wound cavity that exceeds what you'd get from conventional designs.
The 70-grain solid copper projectile starts tumbling at velocities as low as 500 feet per second, so it performs reliably even when fired from a short barrel at close range. Because there are no moving parts inside the bullet, you get consistent performance shot to shot. The projectile is machined from solid copper on a CNC lathe with tight tolerances, so you can trust your next shot will perform like the last one. This ammunition is also lead-free, making it suitable for ranges and hunting areas where traditional ammunition is restricted.
Maxim Defense paired these projectiles with military-grade hard primers and quality brass cases to ensure feeding and ignition you can count on. The ammunition is manufactured in the USA and loaded to consistent pressures. It works equally well in AR-15s with intermediate-length barrels, SBRs, and AR pistols where you might be getting 2,000 feet per second instead of 2,800. Whether you're running this through a 10-inch barrel or an 8-inch upper, the round is tuned for the real-world ballistics of your platform.
TUI stands for Tumble Upon Impact. Instead of expanding like conventional hollow points, the solid copper projectile tumbles through the target creating a larger wound cavity. This technology is especially effective at lower velocities from short barrels where expansion is unpredictable. The projectile begins tumbling at velocities as low as 500 feet per second, making it reliable for close-range and short-barrel applications.
Shorter barrels produce lower muzzle velocity, typically 200-300 feet per second less than full-length barrels. At these reduced velocities, standard expanding ammunition may not perform as designed. This Maxim Defense load uses TUI technology to function reliably at these lower speeds, delivering effective terminal performance when it counts.
Yes. The solid copper projectile design makes this ammunition completely lead-free, so it's suitable for ranges and hunting areas that restrict lead ammunition. You get the same performance without the lead content.
This ammunition is optimized for short-barrel rifles and carbines, including SBRs and AR pistols typically running 5 to 11-inch barrels. It also works in standard 16-inch rifles, where the higher velocity actually enhances performance. Use standard ammunition recommendations for your specific barrel length and twist rate.
| UPC | 680017490027 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MXM-49002 |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Grains | 70 gr |
| Model | |
| Product Type | Copper |
| Units per Box | 20 |
| Cost per Round | 1.40 |
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