Alex Pro Firearms120911575
Alex Pro Firearms Guardian 5.56 NATO M4 Rifle - MultiCam Green, 16" Barrel, M-LOK Handguard, 30-Round Magazine$898.88
Availability: In Stock
The Alex Pro Firearms Guardian 5.56 NATO M4 carbine is a practical, optics-ready rifle built for shooters who want a modern platform without unnecessary complexity. With a 16-inch barrel, M-LOK handguard, and pre-drilled for a optics mount, this rifle bridges the gap between an AR platform that's easy to customize and a complete package that works out of the box. Whether you're training at the range, setting up a home-defense rifle, or building a modular setup, the Guardian gives you a solid foundation in 5.56 NATO.
The 16-inch 4150 chromoly barrel is mag-phosphate coated for corrosion resistance in field conditions. The 15-inch slim M-LOK handguard offers real estate for mounting lights, lasers, or slings without excess weight or bulk. The rifle ships with a 30-round magazine and an A2 flash hider to manage muzzle blast—useful for indoor range work or when every decibel counts. An M4-style adjustable stock and A2 pistol grip round out the ergonomics, familiar to anyone who's run an AR platform.
Alex Pro Firearms engineered this carbine with modularity in mind. The optics-ready upper receiver accepts standard picatinny rail mounts, so you can choose your own glass. The M-LOK slots throughout the handguard let you dial in your accessory layout without drilling or permanent modifications. Strip it, upgrade it, or run it stock—the Guardian plays well with the AR ecosystem.
This is a no-nonsense rifle for shooters who understand that reliability beats hype. Build your fighting rifle your way.
| Caliber | 5.56 NATO |
| Barrel Length | 16 inches |
| Barrel Material | 4150 chromoly, mag-phosphate coated |
| Handguard | 15-inch slim M-LOK |
| Stock | M4 adjustable |
| Grip | A2 pistol grip |
| Muzzle Device | A2 birdcage flash hider |
| Magazine Capacity | 30 rounds (included) |
| Finish | Black |
The Guardian has an optics-ready upper receiver with standard picatinny rail mounting. Any optic designed for a picatinny rail—whether it's a red dot, holographic sight, or low-power variable scope—will work. You'll need to source a mount separately based on your optic choice.
Yes. The 15-inch slim M-LOK handguard has M-LOK slots that accept standard M-LOK-compatible rail segments and accessories. This lets you add lights, slings, or vertical grips exactly where you need them without permanent modifications.
The carbine ships with a 30-round magazine. Optics and additional accessories are not included and must be sourced separately.
The upper receiver is pre-configured with the mounting surface and picatinny rail needed to attach an optic. You don't need gunsmithing; just select your optic and a compatible mount, and you're ready to zero and shoot.
SKU: 120919663 • Weight: 9.83oz
Availability: In Stock
The Alex Pro Firearms Guardian 5.56 NATO M4 carbine is a practical, optics-ready rifle built for shooters who want a modern platform without unnecessary complexity. With a 16-inch barrel, M-LOK handguard, and pre-drilled for a optics mount, this rifle bridges the gap between an AR platform that's easy to customize and a complete package that works out of the box. Whether you're training at the range, setting up a home-defense rifle, or building a modular setup, the Guardian gives you a solid foundation in 5.56 NATO.
The 16-inch 4150 chromoly barrel is mag-phosphate coated for corrosion resistance in field conditions. The 15-inch slim M-LOK handguard offers real estate for mounting lights, lasers, or slings without excess weight or bulk. The rifle ships with a 30-round magazine and an A2 flash hider to manage muzzle blast—useful for indoor range work or when every decibel counts. An M4-style adjustable stock and A2 pistol grip round out the ergonomics, familiar to anyone who's run an AR platform.
Alex Pro Firearms engineered this carbine with modularity in mind. The optics-ready upper receiver accepts standard picatinny rail mounts, so you can choose your own glass. The M-LOK slots throughout the handguard let you dial in your accessory layout without drilling or permanent modifications. Strip it, upgrade it, or run it stock—the Guardian plays well with the AR ecosystem.
This is a no-nonsense rifle for shooters who understand that reliability beats hype. Build your fighting rifle your way.
| Caliber | 5.56 NATO |
| Barrel Length | 16 inches |
| Barrel Material | 4150 chromoly, mag-phosphate coated |
| Handguard | 15-inch slim M-LOK |
| Stock | M4 adjustable |
| Grip | A2 pistol grip |
| Muzzle Device | A2 birdcage flash hider |
| Magazine Capacity | 30 rounds (included) |
| Finish | Black |
The Guardian has an optics-ready upper receiver with standard picatinny rail mounting. Any optic designed for a picatinny rail—whether it's a red dot, holographic sight, or low-power variable scope—will work. You'll need to source a mount separately based on your optic choice.
Yes. The 15-inch slim M-LOK handguard has M-LOK slots that accept standard M-LOK-compatible rail segments and accessories. This lets you add lights, slings, or vertical grips exactly where you need them without permanent modifications.
The carbine ships with a 30-round magazine. Optics and additional accessories are not included and must be sourced separately.
The upper receiver is pre-configured with the mounting surface and picatinny rail needed to attach an optic. You don't need gunsmithing; just select your optic and a compatible mount, and you're ready to zero and shoot.
SKU: 120919663 • Weight: 9.83oz