Does not work with some featureless grips & some buffer tubes. - Magpul Industries MOE AR-10/AR-15/SR-25 Fixed Carbine Mil-Spec Stock

If you live in a states, like NY & CA, that requires featureless grip such as Sparrow Dynamics or Resurgent Arms ... you will not have enough space to fit your thumb. This would've been helpful information for customers that typically search for fixed stocks due to compliance laws in their states.

TIP: If by chance you are using these featureless high finger webbing profile grips, pick up an AR Stop Block so that you're able to use any collapsible stock which will allow you to back off and stop the stock, allowing for your thumb to fit.

This stock also might have some issues with certain buffer tubes where the stock's tightening cross bolt won't clear the tube's collapsible channel towards the front end. I had to shave a small cross channel on the aluminum buffer tube so that the stock's cross bolt can clear.

Overall, Magpul makes decent products and this stock is no exception.