70 Year Old Mystery ❓️Unboxing 20 mm M3 Breechblock Slide Plate #unboxing #surplus #army #military
This guide details the unboxing and identification of a 20mm M3 Breechblock Slide Plate, a vintage military surplus part. The process involves careful unwrapping of aged packaging, revealing a cosmoline-coated component. Expert identification is confirmed through ordnance stamps and technical diagrams, highlighting the part's condition and historical context.





