Alex Pro Firearms120919663
Alex Pro Firearms Guardian 5.56 NATO M4 Carbine - 16" Barrel, M-LOK Handguard, 30-Round Magazine, Optics-Ready, Black Finish$932.63
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Availability: In Stock
The Alex Pro Firearms Guardian 5.56 NATO rifle is a modern, versatile AR platform built for hunters, sport shooters, and tactical enthusiasts who want a no-nonsense rifle ready to run optics out of the box. This 16-inch rifle combines a reliable piston gas system with a slim M-LOK handguard, giving you a lightweight, maneuverable platform that's equally at home in the field, at the range, or in a defensive role. The Flat Dark Earth finish blends durability with a professional aesthetic, and the included 30-round magazine means you're ready to go the moment it arrives.
At its core, the Guardian is built on proven AR architecture: a 4150 chrome-moly barrel with magnesium phosphate coating for corrosion resistance, a standard M16 bolt carrier group, and an M4-length adjustable stock that lets you dial in your ideal length of pull. The A2 pistol grip and A2 birdcage flash hider are field-proven controls, and the optics-ready receiver means you can mount your preferred sight without any guesswork. The 15-inch slim M-LOK handguard gives you plenty of real estate to attach lights, foregrips, slings, and other accessories without unnecessary bulk.
Whether you're setting up a new shooter, building a hunting rifle, or adding another 5.56 to your safe, the Guardian delivers solid performance without the premium price tag of boutique builds. It's straightforward, reliable, and ready to work.
| Caliber | 5.56 NATO |
| Barrel Length | 16 inches |
| Barrel Material | 4150 Chrome-Moly, Magnesium Phosphate Coated |
| Handguard | 15-inch Slim M-LOK |
| Bolt Carrier Group | M16 |
| Stock | M4 Adjustable |
| Grip | A2 Pistol Grip |
| Muzzle Device | A2 Birdcage Flash Hider |
| Receiver | Optics Ready (Picatinny Rail) |
| Magazine | One 30-Round Magazine Included |
| Finish | Flat Dark Earth |
Yes—the receiver features a standard flat-top Picatinny rail, so you can mount any optic with a standard Picatinny adapter. Whether you prefer a red dot, low-power variable scope, or magnified sight, you'll need a compatible rail-mounted base and rings, but the rifle itself is ready to accept optics without modification.
The 15-inch slim M-LOK handguard lets you attach modern accessories—lights, vertical grips, sling mounts, and rail segments—directly to the forend using standard M-LOK hardware. It keeps the rifle modular and lets you configure it for your specific role without excess weight or bulk.
The Guardian does not include backup iron sights; it ships optics-ready with a flat-top receiver and Picatinny rail. You'll need to source and mount your own optic or backup sights.
The 5.56 NATO with a 16-inch barrel is a versatile choice for target shooting, hunting smaller game, sport competition, and home or property defense. It balances velocity, accuracy, and handling for both field and range use.
SKU: 120920847 • Weight: 9.83oz
Availability: In Stock
The Alex Pro Firearms Guardian 5.56 NATO rifle is a modern, versatile AR platform built for hunters, sport shooters, and tactical enthusiasts who want a no-nonsense rifle ready to run optics out of the box. This 16-inch rifle combines a reliable piston gas system with a slim M-LOK handguard, giving you a lightweight, maneuverable platform that's equally at home in the field, at the range, or in a defensive role. The Flat Dark Earth finish blends durability with a professional aesthetic, and the included 30-round magazine means you're ready to go the moment it arrives.
At its core, the Guardian is built on proven AR architecture: a 4150 chrome-moly barrel with magnesium phosphate coating for corrosion resistance, a standard M16 bolt carrier group, and an M4-length adjustable stock that lets you dial in your ideal length of pull. The A2 pistol grip and A2 birdcage flash hider are field-proven controls, and the optics-ready receiver means you can mount your preferred sight without any guesswork. The 15-inch slim M-LOK handguard gives you plenty of real estate to attach lights, foregrips, slings, and other accessories without unnecessary bulk.
Whether you're setting up a new shooter, building a hunting rifle, or adding another 5.56 to your safe, the Guardian delivers solid performance without the premium price tag of boutique builds. It's straightforward, reliable, and ready to work.
| Caliber | 5.56 NATO |
| Barrel Length | 16 inches |
| Barrel Material | 4150 Chrome-Moly, Magnesium Phosphate Coated |
| Handguard | 15-inch Slim M-LOK |
| Bolt Carrier Group | M16 |
| Stock | M4 Adjustable |
| Grip | A2 Pistol Grip |
| Muzzle Device | A2 Birdcage Flash Hider |
| Receiver | Optics Ready (Picatinny Rail) |
| Magazine | One 30-Round Magazine Included |
| Finish | Flat Dark Earth |
Yes—the receiver features a standard flat-top Picatinny rail, so you can mount any optic with a standard Picatinny adapter. Whether you prefer a red dot, low-power variable scope, or magnified sight, you'll need a compatible rail-mounted base and rings, but the rifle itself is ready to accept optics without modification.
The 15-inch slim M-LOK handguard lets you attach modern accessories—lights, vertical grips, sling mounts, and rail segments—directly to the forend using standard M-LOK hardware. It keeps the rifle modular and lets you configure it for your specific role without excess weight or bulk.
The Guardian does not include backup iron sights; it ships optics-ready with a flat-top receiver and Picatinny rail. You'll need to source and mount your own optic or backup sights.
The 5.56 NATO with a 16-inch barrel is a versatile choice for target shooting, hunting smaller game, sport competition, and home or property defense. It balances velocity, accuracy, and handling for both field and range use.
SKU: 120920847 • Weight: 9.83oz