Aero Precision M4E1 ATLAS S-ONE .300 BLK AR Pistol – 8" Nitride Barrel, Ambidextrous Controls, Kodiak Brown Cerakote
This Aero Precision M4E1 ATLAS S-ONE pistol is a factory-built, custom-equipped AR-15 platform chambered in .300 AAC Blackout. Finished in uniform Cerakote Kodiak Brown, it features ambidextrous controls, a slim free-float ATLAS S-ONE M-LOK handguard, and an SB Tactical adjustable brace. An 8-inch nitride-treated CMV barrel with 5/8×24 threads and a 3-prong 7.62 flash hider make it suppressor-ready and compact for maneuverability.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling – Sharp lands and grooves.
Specific Condition Notes: Cerakote surfaces display only minor handling marks. The bore is bright with crisp rifling, indicating very limited round count.
What’s Included
- Two 20-round Magpul PMAG Gen M3 polymer magazines marked “300 BLK”
- Installed M-LOK hand stop
- Miscellaneous small parts
The forged 7075-T6 M4E1 lower receiver integrates Aero Precision’s enlarged trigger guard for added strength and distinctive styling. An ambidextrous magazine release and ambidextrous safety selector are factory-installed, giving both right- and left-handed shooters intuitive control.
The 7.3-inch ATLAS S-ONE free-float handguard uses the Taper-Lock system for secure mounting while keeping weight down. M-LOK slots at the 3, 6, and 9 o’clock positions, plus integrated QD sockets, provide flexible accessory placement without bulk.
The 8-inch chrome-moly-vanadium barrel is nitride-treated inside and out for corrosion resistance and longevity. A pistol-length gas system is tuned for reliable cycling with subsonic or supersonic .300 BLK loads, and the 5/8×24 threaded muzzle comes capped by a 3-prong flash hider marked “7.62.”
An SB Tactical adjustable pistol brace with Velcro strap offers compact stability and complements the pistol’s uniform Cerakote finish across the receivers, handguard, and buffer tube.