Purchased a used M4 and they replaced the factory rail with this. Would like to go back to the factory look. So would trade this for the factory picatinny rail.
https://vtsupply-com.3dcartstores.com/Black-Aces-Benelli-M4-Quad-Rail_p_1125.html
https://vtsupply-com.3dcartstores.com/Black-Aces-Benelli-M4-Quad-Rail_p_1125.html