SECTION 1. Section twenty-six hundred and ninety-two of the Revised Administrative code, as amended by Commonwealth Act Numbered Fifty-six, is hereby further amended to read as follows:
"SEC. 2692. Unlawful manufacture, dealing in, acquisition, disposition or possession of firearms, or ammunition therefore, or instrument used or intended to be used in the manufacture of firearms or ammunition.—Any person who manufactures, deals in, acquires, disposes, or possesses, any firearm, parts of firearms, or ammunition therefore, or instrument or implement used or intended to be used in the manufacture of firearms or ammunition in violation of any provision of sections eight hundred and seventy-seven to nine hundred and six, inclusive, of this Code, as amended, shall, upon conviction, be punished by imprisonment for a period of not less than one year and one day nor more than five years, or both such imprisonment and a fine of not less than one thousand pesos nor more than five thousand pesos, in the discretion of the court. If the article illegally possessed is a rifle, carbine, grease gun, bazooka, machine gun, submachine gun, hand grenade, bomb, artillery of any kind or ammunition exclusively intended for such weapons, such period of imprisonment shall be not less than five years nor more than ten years. A conviction under this section shall carry with it the forfeiture of the prohibited article or articles to the Philippine Government.
"The possession of any instrument or implement which is directly useful in the manufacture of firearms or ammunition on the part of any person whose business or employment does not deal with such instrument or implement shall be prima facie proof that such article is intended to be used in the manufacture of firearms or ammunition."