Aero Precision X15 Custom .300 AAC Blackout AR-15 Rifle with Geissele MK1 Rail, Geissele Trigger & Nickel-Boron BCG
This Aero Precision Model X15 is a purpose-built, full-size AR-15 platform chambered in .300 AAC Blackout. It stands out with a Geissele Super Modular Rail MK1 13-inch free-float handguard, a Geissele aftermarket trigger, and a nickel-boron plated full-auto profile bolt-carrier group. A Primary Weapons Systems FSC-30 compensator and stainless steel, medium-contour threaded barrel complete a feature set aimed at accuracy, reliability, and soft recoil.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Minor surface scratches and small blemishes are present, but none affect performance or function. The bore remains bright and shiny, reflecting careful maintenance.
What’s Included
- 1x 30-round Hexmag polymer STANAG-pattern magazine
Built on forged 7075-T6 upper and lower receivers with a Type III hard-coat anodized finish, this rifle delivers the strength expected from Aero Precision while keeping overall weight manageable. The lower features the Gen 2 enlarged magwell flare and a nylon-tipped upper-tension screw for a solid, rattle-free receiver fit.
The 16-inch stainless steel barrel uses a medium contour for balanced rigidity and handling. It is threaded 5/8-24 and topped with a PWS FSC-30 compensator that helps reduce flash and mitigates recoil, making rapid follow-up shots easier.
A Geissele Super Modular Rail MK1 13-inch handguard offers a rigid, free-float mounting surface with a continuous Picatinny top rail for optics and accessories. Machined from 7000-series aluminum, it keeps weight low while maintaining strength.
The Geissele single-stage trigger provides a crisp, consistent break, enhancing precision. Complementing the trigger, the nickel-boron plated bolt-carrier group ensures smooth cycling and easy cleanup, while an ambidextrous two-lever safety adds user flexibility.
A Magpul MOE 6-position adjustable stock and matching MOE pistol grip round out the furniture, letting the shooter tailor length of pull and grip angle for comfort.