The Stag Arms STAG-15 M4 is a no-nonsense 5.56 NATO AR-15 rifle built to mil-spec standards for hunters, sport shooters, and anyone who wants a proven platform without the frills or the premium price tag. This 16-inch carbine delivers the reliability of a military-proven design in a compact package that handles well in the field or on the range. The direct impingement system, chrome-lined barrel, and mil-spec components mean this rifle was engineered to run hard and last—exactly what you need when performance matters.
Stag Arms has equipped the STAG-15 M4 with genuine mil-spec hardware throughout: a forged 7075-T6 aluminum receiver with Type 3 hard coat anodizing for durability, a carbine-length gas system, and a manganese phosphate-coated M16 bolt carrier group that's built to handle thousands of rounds. The 16-inch 4150 steel barrel features a 1/7 twist rate and government profile, suitable for a wide range of 5.56 and .223 ammunition. You get a removable A3 carry handle and F-marked A2 front sight, so you can run it as-is or upgrade to modern optics and rail systems down the road.
Out of the box, this rifle comes with a 30-round magazine, six-position adjustable stock for length-of-pull customization, thermoplastic handguard with double heat shields, and an A2 birdcage flash hider. At 6.75 lbs, it's light enough for extended hunting trips yet substantial enough for serious marksmanship. The trigger is a mil-spec single-stage unit paired with a Magpul MOE trigger guard—nothing fancy, but predictable and reliable.
| Caliber | 5.56 NATO / .223 |
| Barrel Length | 16 inches |
| Barrel Material | 4150 Steel, Chrome Lined, Government Profile |
| Twist Rate | 1/7 Button Rifled |
| Action | Semi-Auto Direct Impingement |
| Receiver | Forged 7075-T6 Aluminum, Type 3 Hard Coat Anodizing |
| Bolt Carrier Group | Mil-Spec M16, Manganese Phosphate Coated |
| Gas System | Carbine Length with A2 Front Post |
| Handguard | Thermoplastic with Double Heat Shields |
| Front Sight | F-Marked A2 with Bayonet Lug |
| Rear Sight | Removable A3 Carry Handle |
| Buttstock | Mil-Spec 6-Position Adjustable |
| Trigger | Mil-Spec Single Stage with Magpul MOE Trigger Guard |
| Grip | A2 Style Plastic |
| Charging Handle | Standard Mil-Spec |
| Muzzle Device | A2 Birdcage Flash Hider |
| Magazine | 30-Round (Included) |
| Safety Selector | Right Hand |
| Weight | 6.75 lbs |
| Length (Collapsed) | 32.25 inches |
| Length (Extended) | 35.5 inches |
Yes. The STAG-15 M4 is a straightforward, reliable 5.56 NATO carbine suitable for hunting and range work. Its mil-spec design, chrome-lined barrel, and proven direct impingement system make it dependable in the field. The 16-inch barrel is handy for brush hunting and close-to-medium-range shooting, while the adjustable stock lets you dial in your fit for different shooting positions.
Yes. The STAG-15 M4 comes with a removable A3 carry handle, so you have the flexibility to add picatinny rail-mounted scopes, red dots, or other modern optics. The thermoplastic handguard can be upgraded to a free-float rail system if you want to expand your accessory options further.
The STAG-15 M4 ships with a 30-round magazine and the A2 birdcage flash hider already installed. The rifle is complete and ready to shoot once you acquire ammunition and follow all local firearms laws.
The 1/7 twist rate is a standard mil-spec specification that stabilizes a wide range of bullet weights in both 5.56 NATO and .223 Remington ammunition. This versatility makes it easy to find affordable practice rounds or quality hunting loads without worrying about compatibility.
Firearm Shipments:
To buy rifles or shotguns, you must be 18 years old, and for handguns, actions, or receivers, the minimum age is 21. By placing an order for this firearm, you confirm that you are the legitimate transferee/buyer, meet the legal age requirements, and comply with all Federal, State, and local laws and regulations necessary to purchase this firearm.
We only ship firearms to valid Federal Firearms License (FFL) holders. At checkout we provide a FFL locator for your convenience.
We will need a copy of the FFL’s license to facilitate the process, kindly request your dealer to email us a copy of their FFL, as we cannot dispatch the firearm until we receive this document. It is imperative for the buyer to choose their FFL dealer, ensure they are willing to facilitate the transfer, and have them email their FFL copy to BOSQUE Outdoors. To avoid any confusion, the customer's name or order number must be mentioned in the email containing the FFL.
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