Some folks were curious as to how I did it, so here is a how to :).
Materials I used: S&T Spring Remington 870
35mmx20mm steel box section. I used 3mm thick stock.
Random barrel mount from an M203
3 M6 x 10 countersunk machine screws
2 M6 x 25 countersunk machine screws
5 x m6 nylon...