Aero Precision Gen 2 AR15 Multi-Caliber Black Receiver

Aero Precision Gen 2 Receiver — AR-15 Stripped Lower (Multi-Caliber, 7075-T6, Black Anodized)

The Aero Precision Gen 2 Receiver is a premium AR-15 stripped lower engineered for multi-caliber builds and mil-spec compatibility. Machined from forged 7075-T6 aluminum and finished in durable black anodize, this Gen 2 lower delivers billet aesthetics with forged strength, a flared magwell for fast reloads, and precise factory tolerances that ensure a perfect fit with standard AR-15 components. Ideal for custom rifle builds, competition pistols, and duty platforms.

Key Features

• Gen 2 design optimized for multi-caliber AR-15 builds and broad magazine compatibility
• Forged 7075-T6 aluminum construction for industry-leading strength-to-weight ratio
• Black anodized finish for corrosion resistance and a tactical matte look
• Machined to mil-spec dimensions for reliable compatibility with AR-15 lower parts kits, buffers, and stocks
• Nylon-tipped tensioning set screw to fine-tune upper/lower fit and eliminate play
• Increased flared magwell for faster, more consistent reloads under stress
• Threaded rear takedown pin detent recess (4-40) for easier detent installation
• Threaded bolt catch roll pin included for simplified assembly and durability
• Marked “Cal Multi” for easy identification on multi-caliber builds
• Stripped lower — choose your preferred lower parts kit, buffer, and stock to complete the build

Specifications

• Brand: Aero Precision
• Model: Gen 2 Receiver (Stripped Lower)
• Category: Lowers / AR-15 Receiver
• Firearm Fit: AR-15 (Multi-Caliber)
• Material: 7075-T6 Forged Aluminum (machined)
• Finish: Black Anodized
• Type: Stripped lower (requires lower parts kit, buffer & stock)
• Includes: Nylon-tipped tensioning set screw; threaded bolt catch roll pin
• Features: Flared magwell; threaded rear takedown pin detent recess (4-40)
• Compatibility: Mil-spec AR-15 lower parts kits and standard magazines
• Trigger: None (stripped)
• Weight: ~8.35 oz (stripped)
• Marking: Cal Multi

The Aero Precision Gen 2 Receiver gives builders a rock-solid, mil-spec foundation with smart assembly features and a premium forged aluminum build. Whether you’re assembling a precision AR-15, PCC, or a duty rifle, this Gen 2 lower simplifies assembly and improves long-term fit, function, and reliability.