WHAT DOES M1 CARBINE MEAN?

Developed from 1952-1971, the Browning double automatic or Twelvette is a unique semi-automatic shotgun that incorporates a remaining facet loading gate. The initial shell is placed in the loading gate and automatically chambered, and the 2nd shell will chamber just after the 1st is fired.Removing the mid- and rear-lock retaining pins and retractin