Aero Precision M4E1 6mm ARC AR-15 Custom Build, 18 in Stainless Barrel, ATLAS S-ONE M-LOK, Magpul PRS Lite, Green Finish
This custom-assembled Aero Precision M4E1 in 6mm ARC pairs an 18 in stainless barrel with a feature-rich AR-15 setup finished in green. It is built on forged 7075-T6 receivers and outfitted with Aero's ATLAS S-ONE M-LOK handguard and BREACH ambidextrous charging handle. A Magpul PRS Lite stock on a carbine receiver extension rounds out a precise, highly configurable layout.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: Light handling wear is present with a few small surface scratches on the metal. The finish retains strong coverage with minimal loss. Some carbon buildup is visible.
What’s Included
- Magpul PRS Lite stock (installed)
- Aero Precision BREACH ambidextrous charging handle (installed)
- Angled foregrip (installed)
- M-LOK rail cover panels (installed)
- 1x 15-round 6mm magazine
Assembled from components on the Aero Precision M4E1 platform, this rifle combines forged 7075-T6 aluminum receivers with a matching green finish and the lightweight ATLAS S-ONE M-LOK handguard. The upper includes a forward assist, shell deflector, and ejection-port cover, and the receiver’s top rail is T-marked for clear reference points.
The 18 in stainless steel barrel is threaded and capped with a birdcage flash hider. The rifle is chambered in 6mm ARC and uses a direct-impingement, semi-automatic operating system. Capacity is 15+1 with the included magazine.
Ergonomics and adjustability are central to this build. The Magpul PRS Lite stock is mounted on a carbine receiver extension and offers adjustable length of pull and cheek height; length of pull measures 14.0 in. A Magpul pistol grip is installed, along with M-LOK rail covers and an angled foregrip for added hand placement options.
The Aero Precision BREACH ambidextrous charging handle features reinforced construction and ambidextrous controls (U.S. Patent No. 11,187,476). The receivers and handguard share a green finish for a cohesive look. The lower is marked "CAL MULTI." Country of origin is the United States.