AR-STONER AR-15 Slick Sided Billet Upper Receiver Assembly Gen 2 5.56x45mm NATO 16″ Barrel Mid Length 15″ M-LOK Ultralight Handguard Black

Experience smoother recoil impulse and improved cycling efficiency with the AR-STONER AR-15 Slick Sided Billet Upper Receiver Assembly Gen 2 Mid-Length. Chambered in 5.56x45mm NATO with a 16-inch barrel, this Gen 2 assembly features a mid-length gas system that reduces recoil impulse, lowers gas port pressures, and extends bolt life compared to standard carbine-length systems.

Machined from high-strength billet aluminum, the slick-sided receiver omits the forward assist and dust cover for an ultra-clean, snag-free profile that cuts down unnecessary weight. Encased in a slim 15-inch free-floating M-LOK ultralight handguard, this complete upper receiver provides expansive rail real estate for mounting optics, tactical lights, and foregrips. Engineered for plug-and-play installation, it drops seamlessly onto any mil-spec AR-15 lower receiver.

• Caliber: 5.56x45mm NATO (.223 Remington compatible)

• Barrel Length: 16 Inches

• Gas System: Mid-Length (Reduced Recoil & Softer Cycling)

• Receiver Type: Slick Sided CNC-Machined Billet Aluminum (No Forward Assist/Dust Cover)

• Handguard: 15-Inch Ultralight Free-Float M-LOK Rail System

• Use Case: High-volume target practice, lightweight tactical rifle builds, 3-gun competition, and range shooting

Features

Complete Bolt Carrier Group
Ultralight M-Lok Handguard
Slick side upper receiver

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Made In United States of America
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