Aero Precision M4E1 5.56 NATO AR-15, 16 in Barrel, ATLAS R-ONE M-LOK, Magpul UBR Gen2, Ambi Safety
This Aero Precision M4E1 stands out as a thoughtfully customized AR-15 featuring premium Aero components and Magpul furniture. Built on 7075-T6 aluminum receivers with a free-float ATLAS R-ONE M-LOK handguard, it includes a Magpul UBR Gen2 adjustable stock, Magpul MOE pistol grip, and installed angled foregrip and hand stop. The rifle is chambered in 5.56 NATO with a 16-inch barrel, threaded with an A2-style flash hider, and is in excellent overall condition.
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: The rifle shows a few minor scratches and small blemishes consistent with light handling.
What’s Included
- 1x 30-round Magpul PMAG polymer magazine
- Angled foregrip (installed on M-LOK handguard)
- Forward hand stop (installed on M-LOK handguard)
The M4E1 receiver set uses 7075-T6 aluminum with a matte black anodized finish and includes an integrated trigger guard and flared magwell. It has a forward assist, shell deflector, and a hinged ejection port cover. Aero "A" logos appear on the magwell and the bolt carrier (visible through the open ejection port); the dust cover itself is plain, with manufacturer markings from Aero Precision, Lakewood, WA.
The ATLAS R-ONE free-float handguard is 6061-T6 aluminum and features a continuous top Picatinny rail with M-LOK slots at 3, 6, and 9 o'clock. It uses Aero's ATLAS clamping interface for secure attachment. An angled foregrip and forward hand stop are installed on the M-LOK interfaces.
This semi-automatic, direct-impingement rifle is chambered in 5.56mm NATO with a 16-inch barrel. The barrel is threaded and fitted with an A2-style flash hider. The top rail provides ample space for mounting sights or optics, and the rifle ships without sights installed.
Furniture includes the Magpul UBR Gen2 adjustable stock with a listed length of pull from 11.5 to 15 inches, paired with a Magpul MOE pistol grip. An ambidextrous safety is installed. Capacity is 30+1 with the included 30-round PMAG. Made in the United States.