Aero Precision X15 5.56 NATO AR-15, 16 in Barrel, BCM Upper & BCG, BCM MCMR-15 Handguard, Radian Raptor, B5 FDE, SureFire Warden
This Aero Precision X15 is a well-executed, custom AR-15 build centered on an Aero lower and BCM upper components. It pairs a 16-inch 5.56 NATO, direct-impingement system with a BCM MCMR-15 free-float M-LOK handguard, a Radian Raptor ambidextrous charging handle, and B5 Systems FDE furniture. A SureFire Warden blast regulator is installed on a SOCOM quick-attach collar, and the rifle presents a clean two-tone black/FDE configuration with a full-length Picatinny top rail and no sights installed.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Specific Condition Notes: There are light signs of wear and handling, with some surface scratches.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
What’s Included
- SureFire Warden Fast-Attach blast regulator (installed)
- Vertical foregrip with integrated folding bipod (installed)
- Magpul PMAG Gen M3 windowed 30-round polymer magazine
Built on an Aero Precision X15 lower, this rifle features 7075-T6 aluminum receivers with a hardcoat anodized black finish. The lower is marked with the Aero Precision A logo, MODEL X15, and CAL MULTI, with AERO PRECISION LAKEWOOD, WA on the right side. It is a United States-made, AR-15 pattern, semi-automatic, direct-impingement configuration chambered in 5.56mm NATO with a 30+1 stated capacity.
The upper receiver and bolt carrier group are BCM-marked, matched to a BCM MCMR-15 free-float aluminum M-LOK handguard that runs approximately 15 inches. The handguard includes a T-marked continuous Picatinny top rail and is marked BCM-MCMR-15, Made in USA, US Patent 8904691, and M-LOK.
Controls and ergonomics include a Radian Raptor ambidextrous charging handle, a flat-faced trigger shoe, and a standard magazine release. B5 Systems furniture in FDE consists of an adjustable carbine stock and a matching B5 pistol grip. The listed length of pull is 11.0 inches.
The 16-inch barrel is threaded and currently fitted with a SureFire Warden Fast-Attach blast regulator mounted on a SOCOM quick-attach collar. A vertical foregrip with an integrated folding bipod is installed. No sights are included, and the rifle provides a full-length Picatinny top rail. The two-tone black receivers and handguard with FDE furniture and blast regulator give it a clean, functional appearance.
Feeding is via a detachable box magazine, and this rifle includes a Magpul PMAG Gen M3 windowed 30-round magazine. The build emphasizes proven components and a free-float handguard for accessory mounting along the M-LOK interface.




