Help with Removing Tactical AR-Style Stock

[doitda]

Hey guys.
Just got my new 590A1 a few weeks ago.
It's the model, 51670.
I ordered a few add on parts and am trying to take out the trigger group, but the tactical stock is in the way.
I took off the pistol grip by removing the flathead screw, but can't seem to figure out what loosens the stock from the receiver next

There is a large ring on the threads at the back of the receiving where the buttstock meets the receiver and this is already loosened also.

Any ideas?
I called Mossberg today and the guy on the phone told me that I only needed to remove the flathead screw inside the pistol grip and the rest should come off, but I don't think that was right.

Attaching a picture.

Any help is appreciated.


Thanks,
Chris

 

[oli700]

Interesting…..you appear to have a “buffer tube “ set up……so now that the castle nut is loose , the tube won’t budge turning it counter clockwise ?

I have never seen a stock Mossberg like this.....I have seen aftermarket adaptors meant to take any AR stock similar to what you have there......without being able to hold it, I would concentrate on removing the tube....has to come out or they wouldn’t have put a castle nut on there...

I bet there is a bolt behind that tube holding the adaptor to the receiver.......what you have there is some sort of adaptor that allows AR grip and butt stock options

 

[LAZY EYED SNIPER]

With the pistol grip screw removed it should now separate from the receiver.

Mossberg may have used some sort of locking compound to secure the adapter, so it might take a little light tapping with a mallet to knock it loose...

 

[old mossy]

can you remove the butt plate and use a long flat blade screw driver to remove it from the receiver?

that is a stock mossberg,,,
http://www.mossberg.com/product/shotgun ... shot/51670

 

[oli700]

Don’t listen to these armatures ……take off the tube and I bet there is a bolt

 

[LAZY EYED SNIPER]

^ Yeah, that does make more sense...

 

[old mossy]

Don’t listen to these armatures ……take off the tube and I bet there is a bolt

what kind of lawn mower is it?

 

[oli700]

Don’t listen to these armatures ……take off the tube and I bet there is a bolt

what kind of lawn mower is it?

electric ? Armature...amateur, whatever, we were talking about you not me anyway :|

 

[oli700]

^ Yeah, that does make more sense...

at least you dont make fun of me....dont know why, I'd do it too you

 

[old mossy]

 

[doitda]

Got it! At least so far...

On those threads of the buffer tube, at the six o'clock position is a tiny hole for an allen wrench.
I was able to take out the allen screw and then screw off the buffer tube from the adapter/receiver.

Now I have to take off the adapter from the receiver and that adapter needs a strong, huge flathead.
I slipped once with the biggest flathead I have and am deciding to go to Home Depot tomorrow to buy a bigger flathead.
That adapter/receiver screw is on super tight.

 

[LAZY EYED SNIPER]

Nice.

The threads are usually coated with Loctite, so you might try putting the screwdriver in place and tapping on it with a mallet to loosen up the bond...

 

[oli700]

But if that doesn’t work , before the screw becomes deformed make sure to stop, apply heat....blow drier should work. Hold it on for a while then try again. If you bugger up that slot you will be sorry

 

[John A.]

Are you planning on re-installing the stock?

If not, I have a friend who may be interested in buying that one from you. He's been looking for one that he can put regular AR grips on.

 

[doitda]

I plan to put the stock back on.
Just got a big honkin Husky 3/8" by 12" screwdriver from HD.

Gonna hair dryer it first, tap a few times, then apply some torque with this Husky.