Mossberg’s model 500 shotgun is a very simple little beast.  The one I picked up was rather lacking in that it was a Pistol Grip Only shotgun.  I was going to do something else with it, but decided to sandbag that and go a different round.  So I needed a stock for it.  After some consideration I decided to give the Magpul stock a shot, and I am really glad I did.  I almost always throw on a Butler Creek folding stock, but wanting “different” this time really paid off.
The location of the safety switch on the Mossy shotguns is on top and at the rear of the receiver.  Which makes it’s position perfect for this stock.   It’s awesome if shot from either shoulder.   If you have a Mossberg – this is the stock you need.
The grip angle looks exaggerated, but actually feels very comfortable, and the length of pull is adjustable by adding or removing the spacers.  It comes with no spacers in, making it too short for me.  So adding 2 puts it just right.  For me.  You might be different.