Radian Weapons AX556 Lower Receiver – Superb Ambidextrous AR-15 Billet Lower, Black

Description

The Radian Weapons AX556 lower receiver is a billet-machined foundation built for shooters who refuse to settle for sloppy, rattling AR-15 builds. Cut in the USA from solid 7075-T6 aluminum and finished in Radian Black, this semi-complete receiver (factory part number R0166, cataloged by some distributors as the A-DAC 15) combines a flared magazine well, an integral trigger guard and a complete set of ambidextrous controls so that both right and left-handed shooters can run the rifle without shifting their firing grip.

Why the Radian Weapons AX556 lower receiver stands out

Plenty of stripped lowers simply give you a serialized shell and leave you hunting for parts. This one arrives with the hardware that usually costs extra, and every control has been redesigned rather than borrowed from the mil-spec parts bin.

• Billet 7075-T6 aluminum construction with an integral trigger guard, so there is no separate guard to break, lose or rattle.
• Flared magazine well that funnels magazines home cleanly during fast reloads.
• SART (Self-Adjusting Receiver Tensioner) spring-loaded plunger that takes the annoying upper-to-lower wobble out of the assembled rifle.
• Talon 45/90 ambidextrous safety selectors in both long and short lever configurations, letting you tune throw and lever length to your grip.
• Patented A-DAC (Ambidextrous Dual Action Catch) bolt hold-open, one of the smartest features on any AR-15 lower receiver.
• Full ambidextrous control set included: extended bolt catch, left-side magazine release paddle, right-side magazine release button, right-side bolt release paddle and hammer pin.
• Enhanced takedown pin set that is easier to operate with gloves and far less likely to mar the finish.

How the A-DAC bolt catch works

The A-DAC system is the reason many builders choose this receiver over a conventional billet lower. To lock the bolt to the rear, pull the charging handle back, press the right-side magazine release button, then let the charging handle run forward. A right-handed shooter never has to break the firing grip, and a left-handed shooter gets the same mirrored access through the paddle controls. Combined with the ambidextrous bolt release, clearing a malfunction or running a chamber check becomes a one-hand operation instead of an awkward fumble.

Specifications

• Brand: Radian Weapons (previously branded AXTS Weapons)
• Model: AX556 / A-DAC 15
• Manufacturer part number: R0166
• UPC: 817093021283
• Caliber family: .223 Remington / 5.56 NATO, multi-caliber AR-15 pattern
• Material: billet 7075-T6 aluminum
• Finish: Radian Black hard coat
• Fit: AR-15 / AR-style upper receivers
• Type: semi-complete lower receiver with proprietary ambidextrous hardware installed
• Origin: made in the USA

What you need to finish the build

Because this is a semi-complete receiver rather than a complete lower, plan on adding a trigger group, pistol grip, buffer tube with spring and buffer, a stock or brace, and the AR-15 upper of your choice. The good news is that the parts most builders upgrade later, the safety selector and the ambidextrous controls, are already handled. Pair the Radian Weapons AX556 lower receiver with a quality match-grade upper and a drop-in trigger and you have a rifle that feels custom without a gunsmith bill.

Buying the Radian Weapons AX556 lower receiver from MAG5 Firearms

This is a serialized firearm receiver, so it must ship to a licensed FFL dealer for transfer, and state or local restrictions may apply to your address. Our team can help you match an upper, magazines and a trigger to the build, and everything ships from stock whenever inventory allows. You can read more about the manufacturer at Radian Weapons, or keep browsing our AR lower receiver selection for more options.

Skip the disappointing wobble and mismatched controls of a budget build. The Radian Weapons AX556 lower receiver is an excellent, ambidextrous, American-made billet platform that is worth building a rifle around for the long haul.