I bought a Sully stock, Installed it and its wiggles/ I have a spikes Lower where the little numb in the stock seats into the lower its not tight fitting. If you grab the back of the stock you can physicality twist the stock to the left and the right.

any ideas how i can fix this ?

Ive contacted the people at www.thedefensiveedge.com several times with no reply. I don't want to return the stock i simply want it to fit correctly.

thanks

I had one that did the same thing. You can try tightening up the screw in the back, or just deal with it. Mine wasn't bad, but I could still twist it a little. Ended up selling it to replace it with a Magpul UBR. Glad I did.

Take some of the rubbery compound you buy in a squeeze toothpaste-type tube (damn I'm having a brain fade right now), squirt some into the hole in the stock, and screw on the stock.  That's what I did and it's absolutely steady with no movement at all.  Seriously, works great.

Or, if you're unhappy, sell me the stock, and that's what I'll do with it when I install it on my next lower.  These are awesome stocks.  

like silicone ????

I had a Magpul ubr but i live in New York and adjustable or collapsible stocks are prohibited

"Goop" is the brand name.  Not sure what it is made of.

I could have collapsible stocks on mine, and do on one...but the rest are Sully stocks.  I'm a fan.