Was gonna toss this out and the bulb went off. I dont have a bb trap , just traps for pellets.so.....had some old foam that's the same as those pool noodles.layered 4 deep.so I gutted the heater& cut the grates off.
Then some old rare earth mini mags I knew I had pigeon holed.
And wahlah!!!! I finally have a bb trap.
No idea how long the foam will hold up before needs swapped out with fresh, but it's cheap enough that it won't hurt my pocket much.