First, I have to say, that may be the oddest first shotgun I've ever seen -- it would be my last though I can't compliment the basic action more...
I agree a pistol-grip is not to be toyed around with. And I eschewed them. Was a snob. For good reason. They are severely limited. Then I decided my latest project needed to be one. At this particular time, size matters. And for less than $200 I have the following unused Mossberg 500 and accuterments which now, included in the price tag, will have its newly re-blued barrel ported.
Porting, the wrap-around forearm and lighter 1 oz. (vs. 1 1/4 oz.) #4 Buckshot loads (or the plethora of light, reduced recoil, "tactical" loads available today) make pistol-grips VERY useable tools. The focused light attached also give this Distinguished Expert shooter, Training Counselor and Chief Range Safety Officer a warm and fuzzy feeling -- if the target is indoors and/or in range in the bright central beam of the attached red light, it is getting hit when I pull the trigger, period. Don't get me wrong -- I have the original wood and bought a Mossberg SpeedFeed 4-Round synthetic stock from another forum member for the day I may get over this, but today it is my main HD arm.
Al