Try the Endo Tactical Stock adapter instead. It is more solid than the FAB stock, which flexes in every way, and it doesn't make the gun all heavy and bulky, and you can get a stock that is adjustable and/or folding.
That stock is silly, unless you are running full auto, in which case it would make the gun easier to hold and control, but no worth it in semi.
Also, the comment about not having a safety is a valid one. I would not want to sling it unless I have a manual safety, or I would want a holster type thing, like FAB sells that would hold the gun and cover the trigger guard.
It is not very likely, but likely enought that some peice of webbing, strapping or whatever from you gear could cause an AD.
There is an aftermarket trigger assembly that you can get that has a plunger you have to push in sideways to enable the trigger to go to the rear. Can' trememebr wheat they are called.