You don't need to guess, the article clearly states that it's a toy, 玩具。Here I quoteFrom the description, I’m guessing the factory is either making simunition or 22lr versions of the regular service rifle.
"进入车间,我们看到了两个不同的生产模式,首先看到的是训练器材与玩具,这一块只能说毕竟是造真家伙的,拿在手里的感觉很踏实,我的手不感觉认生,只可惜这些玩具并不能在国内和大家见面"