Isuzu Sento (千斗 いすず, Sento Isuzu?) is the main female protagonist of Amagi Brilliant Park series. She holds the title of First Royal Guard and wields a magical muzzle-loader named Steinberger. Steinberger is silver-white muzzleloader with a wooden grip with golden accents. The golden accents go down the sides and have one straight gold line with another golden line snaking around it. The color scheme of the Steinburger suits Isuzu's character design.
Recommended size is 850 mm long. I sliced it in 5 insertable parts so they fit my printer but included a file with the whole weapon in case you prefer to slice it in a different way.