In early 1945 the entire anti-tank gun issue was re-examined to evaluate the need for large-bore anti-tank guns, as the need in the Pacific did not exist as Japanese armor could easily be penetrated by 37 mm and 57 mm M1 anti-tank guns then available.
Pada awal 1945 keseluruhan produksi meriam anti-tank diperiksa ulang untuk mengevaluasi kebutuhan akan meriam anti-tank berkaliber besar, karena kebutuhan di Pasifik nihil sebab tank Jepang dapat dengan mudah ditembus meriam 37 mm dan 57 mm M1.