RIFLE: AERO PRECISION MODEL X15 RIFLE, SERIAL NUMBER X298501, BLACK (MATTE), CASE NOT INCLUDED, SEMI - AUTOMATIC, 5.56 NATO, 16.5" Notes: AERO PRECISION X15 RIFLE, 223 wylde 18" stainless steel barrel, 30+1 This custom-built AR-style rifle is based on the Aero Precision X15 platform and features a stainless steel .223 Wylde barrel. Combining a proven platform with a versatile chamber design, this rifle offers compatibility with both .223 Remington and 5.56 NATO ammunition when used in accordance with the manufacturer's specifications. The stainless steel barrel provides a distinctive finish and durable construction, making this custom configuration a unique addition to any rifle collection. Ideal for enthusiasts seeking a customized AR platform with quality components and a clean, functional design.