Faxon Firearms URFAXFAS Enhanced Stripped Upper Receiver

The Faxon Firearms URFAXFAS Enhanced Stripped Upper Receiver is a precision-manufactured AR-15 upper built for shooters who demand better than mil-spec right out of the box. This forged aluminum receiver starts with 7075-T6 material and gets attention to detail that most manufacturers skip: Faxon trues the receiver at the factory, hones the bolt carrier group bore smooth, and holds tighter tolerances on the lug surfaces so your upper mates to your lower without slop. If you're assembling a rifle for accuracy or just tired of sloppy fit, this is the upper that rewards careful build work.

The URFAXFAS comes stripped—no forward assist, no ejection port cover—so you control what goes on it. The shell deflector is hollowed out to drop weight and add visual interest without compromising function. T-marks are manually engraved into the receiver and stay crisp and visible even after you run your own finish or coatings. Type III hard-coat anodizing ships from Faxon, giving you a durable baseline that handles the range and field use. The receiver weighs 6.88 ounces, keeping your build lightweight without sacrifice.

Built to run all intermediate cartridges (.223 Rem, 5.56 NATO, 300 Blackout, and the like), the URFAXFAS is the foundation for a reliable AR platform rifle. Larger magnum and big-bore rounds like .458 are outside this upper's design window. Whether you're putting together a precision rifle, a hunting build, or a reliable duty gun, Faxon's engineering in the receiver pays dividends in fit, function, and longevity.

Key Features

• Factory-trued receiver for precise bolt carrier group alignment
• Honed bore for smooth, reliable action
• Tighter lug tolerances for a snug fit with your lower receiver
• Hollowed-out shell deflector reduces weight and adds visual appeal
• Manually engraved T-marks remain visible through anodizing and coatings
• 7075-T6 forged aluminum construction
• Type III hard-coat anodize finish
• Stripped configuration—add your own forward assist and ejection port cover

Specifications

Frequently Asked Questions

What calibers does this AR-15 upper receiver work with?

The URFAXFAS is designed for intermediate cartridges like .223 Remington, 5.56 NATO, 300 Blackout, and similar rounds. Larger magnum and big-bore rounds such as .458 are outside its design specifications and may not function reliably.

Is this a complete upper receiver or stripped?

This is a stripped upper receiver. It does not include a forward assist or ejection port cover, allowing you to choose aftermarket components that fit your build and preferences.

What makes Faxon's upper different from standard AR-15 uppers?

Faxon machines several enhancements directly into the receiver at the factory: the bore is honed for smooth bolt carrier group action, the receiver is trued for precision, and lug tolerances are tightened for a snug fit between upper and lower. The shell deflector is also hollowed out to reduce weight, and T-marks are manually engraved to remain visible even after coating.

Will this receiver work with my AR-15 lower?

Yes, the URFAXFAS upper receiver is compatible with standard AR-15 lower receivers. The tighter lug tolerances engineered into this receiver mean you'll get a superior fit compared to mil-spec uppers.