Beretta’s 1301 Tactical is one of the best semi-auto shotguns on the market, and when paired with one of the best shotgun stocks available – the Magpul SGA – it gets even better. The ASA-1301 adapter is precision machined from 6061 aluminum, and features 3D contouring to seamlessly blend the Aridus SGA stock to the 1301 Tactical’s receiver. The ASA-1301’s fastener is milled from 4140 alloy steel and is parkerized for corrosion resistance.