https://icbfirearms.com/product/radian-weapons-r0435-builder-kit-radian-black-ax556-ambi-lower-8-50-handgaurd-includes-most-lower-parts/
Radian Weapons R0435 Builder Kit Radian Black, AX556 Ambi Lower, 8.50" Handgaurd, Includes Most...
Radian Weapons R0435 Builder Kit Radian Black, AX556 Ambi Lower, 8.50" Handgaurd, Includes Most Lower Parts