From a 2/13/1893 article of "The Internal Revenue Record and Custom Journal" giving American inventors another chance. Some of the debate as described:

Fifty-Second Congress—Second Session
The provision in the Army Appropriation bill inserted by the Senate, in regard to the extension of time for the submission of American inventions of small arms, has been finally adopted. The conferees after considerable debate on the subject agreed to the Senate amendments with modifications fixing the limit within which invention must be submitted at July 1, and providing for the trial of inventions submitted either by the Ordnance and Fortification Board, or a board especially appointed for the purpose by the Secretary of War. As passed by the Senate the former was required to make the test. In considering the proposed extension of time the House Military Committee had before them the recent invention of Capt. White, of the Marine Corps, and it is understood were greatly impressed with its merits.
The House conferees opposed the amendment. They concur to the opinion of the Chief of Ordnance, that there should be no further delay in the equipment of our troops with a modern magazine gun, and that the manufacturer of the Krag-Jorgensen should be proceeded with until an American invention of superior merit is developed. They prefer the method proposed by the circular of Gen. Flagler, issued early in January, in which instructions are given American inventors as to the lines on which they should work for improvements on the Krag-Jorgensen gun. The Senate conferees were equally persistent in their demands for three months in beginning the manufacture of a new weapon. Nearly all the other important items of differences between the two houses have been agreed to. (This last sentence was dealing with issues other than magazine rifle adoption.)