Ive recently been building this Remington 870 Express 12ga 6+1 that accepts 2 3/4 or 3" shells.
Started out like this (stock image)
Added a Blackhawk collapse-able stock with pistol grip, and a tan one point sling
Then added a Magpul forend, aswell as a Magpul 2" rail section for a weapons light down the road
Feel free to show your firearms, tactical or otherwise!