Plastic Model
Model, Dummy, Scale Model
noun, の adjective
An imitation model is obviously not the real thing. It's (usually) a plastic model or just a model figure or something.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
祖父は、最初は従業員一人の小売模型店からこのビジネスを始めました。
My grandfather started his business out as a small one person plastic model retail shop.