Underwood M1 carbine slide type 3. Like new/unissued appears unissued, many still covered in grease. I have several type 2 - 3 - 4 - 6. Let me know a color preference so you can match your action these are as nice as you can get I dont think calling them new is inaccurate. Cosmoline residue is what you see not anything close to corrosion. .U. marked I am not great at figuring unissued or refinished but these are either or really close to it. Please ask questions if pictures are not clear I will send more upon request

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