mossberg 500 help

[mossy]

i am running into a problem trying to get a stock to fit on my new mossberg 500. when i tighten the screw down the stock does not fit flush with the receiver. there is always a gap between the two. what is causing this problem and how do i fix it. the stock is a new blackhawk knoxx top folder. i really want this stock to work because i cannot find another folding stock that matches the quality of the knoxx but cant use it till i figure out what the problem is here is a pic of the gap that is left between the receiver and stock.

[Fherot]

Is the stock for the Mossberg 500 and is it also for the same caliber? 12 gauge, 20 gauge etc?

[mossy]

yes it says it is for the 500 12ga.

[Fherot]

Is there an extra washer on the bolt that doesn't need to be there? Check inside threading of stock and make sure there's no obstructions or flakes of plastic from tooling.

I know the hogue pistol grip stocks don't look like they'll even fit until you tighten them properly then they mold to the gun. First time I went to put it on I had an extra washer I had to take off to fit it snugly.

[mossy]

there is nothing in the way of the bolt. i tried another stock made by mossberg that came with my 590 and it fit great. i think i will just send it back. i am tired of messing with it.

[Fherot]

Yeah sounds defective to me if it just simply won't fit snug and there's no deformations etc.

[kotetu]

I ran into a similar problem (after I installed the GG&G sling loop). I ground down about a millimeter off of the Knoxx stock's mounting alignment ring. Worked like a charm. Take it apart and look at it and you will see what I mean.

[BigFatGuy]

I whacked my Akita stock with a wooden mallet. Went on just fine.