They are just like on the picture. They are not in any way modular (sorry).

Of all the modular parts, I think most folks would use the upswept backstrap and front panel with a finger groove, which is what's on the PTS version anyway. You can add on the enhanced trigger guard separately.

+1 for this thread. Very helpful info.

Magpul MIAD pistol grip
 

Most of my 28 gauges have pistol grip stocks.I do have an AYA double with a straight stock.Speaking for myself I do find that the straight stock seems to be a little quicker on a rising bird.

Dude, stop necro-bumping old threads. You've done this like four times now.