Aero Precision APRA600006C MOD 4 6061-T6 Aluminum

The Aero Precision APRA600006C MOD 4 6061-T6 Aluminum upper receiver is a precision-engineered component designed for AR-15 platforms in tactical, law enforcement, and competitive shooting applications. Built from aircraft-grade 6061-T6 aluminum, this upper receiver serves as the foundation of any reliable modern rifle system. Whether you're building a duty rifle, precision carbine, or patrol carbine for professional use, this component delivers the dimensional accuracy and durability required in high-stakes environments.

Aero Precision's MOD 4 configuration features a proprietary receiver design optimized for tight tolerances and repeatability—critical for accuracy and reliability under sustained fire. The 6061-T6 aluminum alloy provides an optimal balance of weight and structural integrity; at 1.08 lbs, it keeps overall system weight manageable without compromising rigidity. The receiver's flat-top Picatinny rail interface ensures zero-shift mounting for optics and backup sights, while the precision-machined forward assist and dust cover operate smoothly through thousands of cycles. This design eliminates point-of-impact shifts caused by loose receiver components—a real concern in tactical deployments.

Law enforcement marksmen, military armorers, and civilian tactical shooters benefit most from Aero Precision's commitment to dimensional consistency and longevity. This upper receiver is compatible with standard AR-15 bolt carrier groups, charging handles, and barrel assemblies, making it ideal for custom builds or as a replacement component in existing platforms. Installation requires basic armorer knowledge and minimal tools; the receiver pairs seamlessly with Aero Precision barrel extensions and handguards for maximum precision and durability in the field.