590A1 Impossible to remove stock

[SonicKaos]

I just got a Mossberg 590A1 as my first shotgun, new out of the box. Happy days... Except I can't remove the stock to improve it's tacticoolness.

The bolt in there just will. Not. Budge.

Any tips for getting the giant screw out without breaking the stock? My 3/8ths screwdriver and brute force doesn't seem to be working...

 

[svt1940]

Use a 3/8 drive rachet with 1/2 socket,will come off without problem.

 

[GD7]

Use a 3/8 drive rachet with 1/2 socket,will come off without problem.

And about a 6" extension.

 

[svt1940]

And about a 6" extension.

Yes ofc extension needed!