Need a new handgrip for the Mossberg 500

I need a new handgrip for the Mossberg 500. I got this one last year, mainly because they look so cool. The little beast is handy, and as I've said before, that clack-clack sound of it cycling is about as close to a universal language as you can get.

I've watched big bad Arnold pump thirty plus rounds through one of these (without reloading) and thought "I gotta get me one of these!" I did, and I don't regret it, but some adjustment is required.

Anyone who has fired this weapon will know what I am talking about. For those who have not, I dirrect your attention to the right angle handgrip. When the weapon is fired all the recoil goes here, into the web between thumb and forefinger. Hardly a surprise but it can't be appreciated until experienced. With light loads it's a jolt.

My trouble load here at HomePlace is double OO buck interspersed with slugs. This weapon holds seven rounds in the tube, and one in the chamber. Take a moment to think about that.

Three loaded sets with this weapon left my hand numb, which wasn't good. When the feeling came back, that wasn't good either.

I have thought about a gel glove, will probably get one regardless, but I would like to try another apporach. I have noticed when firing regular shotguns from the hip the recoil against the hand isn't that bad. I fired a shotgun like this one during my Cowboy Action Shooting days and didn't have any problems with them.

The reason is the grip is sloped rather than a right angle.

I believe someone out there makes a grip like this for the Mossberg, but I have had no luck locating one. Failing that, I can cut down a standard Mossberg stock.

If anyone out there can put me onto a premade "sloped" handgrip I would be grateful.

Update

This one got quick results. It seems a company called Speedfeed builds exactly what I'm looking for. Thanks for the assist folks.