The Radian AX556 ADAC Ambi Lower Receiver is a billet-machined AR-15 pattern lower built from 7075-T6 aluminum with integral trigger guard geometry and a flared magazine well. It features fully ambidextrous controls and the patented A-DAC (Ambidextrous Dual Action catch) so shooters can lock the bolt back without changing grip, plus Radian’s SART receiver tensioning system to help reduce upper/lower wobble.

Key features

• 7075-T6 billet aluminum construction for rigidity and durability
• Fully ambidextrous controls for both left- and right-handed operation
• Patented A-DAC Ambidextrous Dual Action catch for easier bolt lock-back
• SART self-adjusting receiver tensioner helps reduce upper/lower wobble
• Radian Talon 45/90 ambidextrous safety selector system (long/short lever profiles)
• Type III hard anodize with Cerakote in Radian Grey for corrosion resistance and durability

Build a smoother, more controlled AR-15 lower with the Radian AX556 ADAC Ambi system in Radian Grey.