The M3was a quite reliable gun (and what problems it did have were mostly due to its single-feed magazine and not the gun itself), but a revision program was begun in April 1944. This would producethe M3A1, which further simplified the design by removing the charging handle (which had ...
PURPOSE:To grease by changing over a control valve in a short time when greasing at low speed by arranging the constitution in such a way that a contact shoe reacts by the contact of the cam of a directional control valve and when the deformation quantity of an elastic body exceeds the ...