WHAT DOES BENELLI M4 OR BERETTA 1301 MEAN?

Marine Corps diagram of the industry-stripped M1014 The M4 was the 1st gasoline-operated shotgun made by Benelli. Its purpose is designed close to a wholly new structure known as the "automobile-regulating fuel-operated" (ARGO) procedure. The shorter-stroke design employs two self-cleansing stainless-steel pistons Found just forward with the chambe