The History of Econometric Analysis

The present invention refers to an improved portable firearm, of the rapid fire (sub-machine gun) type, comprising a support structure in which firing and safety means are contained and to which support structure, on its under side, a handle or grip is attached and which handle includes, inside, a removable magazine; on its back side, the upper portion of an end of a stock, the lower part of which stock is fixed to the handle; in its upper front part, a barrel and thereon a sliding bolt which includes in its back portion an invertable and reusable firing pin; in its upper back portion, a guiding means for the removable bolt, included in which is a movable raised portion which carries an orifice for aiming and in its lower front side, an open cover as a hand grip when firing.