When a defense-grade semi-auto needs to deliver repeatable accuracy and rock-solid reliability in demanding environments, component selection matters. This build blends an excellent lower platform with proven match-grade upper components to create a versatile AR-15 style rifle suited for defensive roles, range work, and tactical training.

AERO PRECISION Model X15 is a custom-built AR-15 style rifle that pairs an Aero Precision X15 lower receiver with a LaRue upper and a LaRue Tactical Polymer Combo Package. No box. Comes with 1 40rd magazine. The rifle includes a LaRue MBT-2S Straight Bow trigger and a LaRue TranQuilo 5.56 muzzle brake/adapter, and is listed at $1,099.99. Shop this product

Design and key components

This build centers on the Aero Precision X15 lower receiver — a platform known for tight tolerances and durable ergonomics. The LaRue upper elevates accuracy potential, with the LaRue Tactical Polymer Combo Package providing a combat-ready furniture setup that keeps weight down and handling crisp.

Trigger and muzzle device

The LaRue MBT-2S Straight Bow trigger is a standout for defensive use: predictable break, fast reset, and minimal creep when properly installed and tuned. The LaRue TranQuilo 5.56 muzzle brake/adapter reduces felt recoil and muzzle rise, aiding follow-up shot speed and sight recovery in rapid engagement scenarios.

Performance and intended use

Chambered as a .556-style semi-auto configuration (AR-15 class), this rifle suits home defense, carbine training, and precision work from close to medium ranges. The included 40rd magazine supports prolonged drills and reduces reload frequency during high-intensity practice. Buyers should verify local laws on magazine capacity prior to purchase.

Condition is described as very good with little to no wear; the listing encourages prospective buyers to examine photos for specifics. View product details and pricing

What’s included

Package specifics: AERO PRECISION Model X15 lower with LaRue upper and components, LaRue Tactical Polymer Combo Package, LaRue MBT-2S Straight Bow trigger, LaRue TranQuilo 5.56 muzzle brake/adapter, and one 40-round magazine. No original box is included. Asking price is $1,099.99 — click through to confirm current availability and purchase options. Check current availability

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