Installation was pretty easy. I had already replace the base stock with a G&P metal folding stock earlier , but regardless the install would have been very easy. I used a spare UBR stock and an Element G27 pistol grip. This adapter installed creates a straight alignment between the stock and gun with no off set. So with out a scope mount for an optic of some sort, you can not sight down the gun. I used a reel steel UTG M87 scope mount that is for a Rem 870 and it fit perfectly. I use a red dot optic The trigger pin positions on the PPS are in the correct position as a real 870, so most scope mounts for a Rem 870 should work. Over all a well made product.