GBU DOTAC Custom Series Aluminium Magazine Base (Hi-Capa) 20mm Mount This is the WELL M4

This is the WELL M4 Drum magazine

With premium CNC machining

1 x Mallet with 2 styles of Rubber sides

The Hydra barrel adaptor is a 14mm thread multi fit adaptor

With a 20mm picatinny screw on mount for rifles and a G-Series Mount option if need be

GBU DOTAC Custom Series Aluminium Magazine Base (Hi-Capa) 20mm Mount This is the WELL M4D01 Dottac Magazine Base is made of top quality aluminum, precision machined to the tightest tolerances and hard anodized for extra strength and striking good looks. It fit snugly onto Golden Eagle and Wells Hi Capa Magazine. Shifting Pin holding system designs to lock the base to the magazine, its one piece design which no extra parts or tools needed to attach the base to your magazine. It is super easy to attach and detach from the magazine.