I started with a basic 870 Express Magnum that held 4+1 rounds, and had synthetic furniture. I have since then added a Knoxx Spec Ops stock, and today, I added a 2 round TACSTAR mag extension. My shotty went from holding only 4+1 rounds to 6+1 rounds

Any other ideas for my trusty 870 would be appreciated!
Before:
After:
