A while back I did a thread on a Howa mini that was modified a lot and turned into a single shot.
Since then I see some interest in the mini's but folks don't like the tactical magazine box, so here's a plan.
I would shorten the box like this
The stock box
Cut box
I removed the middle piece and super glued it back together , then I welded the joint with a hot iron, clipped a coil off the spring and reassembled it.
Not as smooth as the single shot but some better than stock.