Aero Precision M4E1 ATLAS R-ONE 5.56 NATO AR-15 Pistol – Flat Dark Earth Cerakote, 14.5" Barrel, SB Tactical Brace
This Aero Precision M4E1 ATLAS R-ONE pistol delivers AR-15 versatility in a compact, brace-equipped package finished in factory Flat Dark Earth Cerakote. Built on the forged-billet M4E1 receiver set with an integrated trigger guard and flared magwell, it pairs a 14.5-inch threaded barrel with the lightweight, free-float ATLAS R-ONE handguard for reliable accuracy and abundant M-LOK real estate. A direct-impingement system, SB Tactical arm brace, and Magpul MBUS sights round out a ready-to-run platform that stays light, maneuverable, and feature-rich.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Rifling: Excellent – Sharp lands and grooves.
Specific Condition Notes: There are a few small scratches on the exterior surfaces, slight finish wear at high-contact points, and mild carbon buildup around the flash hider.
What’s Included
- 2× 30-round Magpul PMAG magazines
- Grip-pod style vertical foregrip bipod (installed)
- Magpul MBUS polymer flip-up front and rear sights (installed)
The M4E1 receiver set blends the strength of forging with billet styling and features an integrated trigger guard plus a flared magwell for faster reloads. Both upper and lower wear matching Flat Dark Earth Cerakote that adds corrosion resistance while maintaining a cohesive appearance.
Aero Precision’s ATLAS R-ONE handguard clamps securely to the barrel nut, creating a true free-float system that enhances accuracy. Its full-length Picatinny top rail and M-LOK slots at 3, 6, and 9 o’clock give ample space for optics, lights, and accessories, while integrated QD sling sockets simplify carry options.
The 14.5-inch, 5.56 NATO barrel uses a 1/2-28 threaded muzzle capped with an A2 flash hider. Coupled with a carbine-length direct-impingement gas system, it balances reliability and recoil control in a pistol-length platform.
An SB Tactical arm brace with Velcro strap provides stability without adding significant weight, and the standard A2-style pistol grip offers a familiar hold. Folding Magpul MBUS sights give a dependable back-up aiming solution right out of the box.
Designed and manufactured in the United States, this recent-release M4E1 pistol offers modern AR-15 features, robust materials, and a factory FDE finish that’s ready for duty, range, or home-defense roles.