How do I remove only the buttstock body from a California-compliant M4 collapsible stock?

[JWP06]

I'm trying to remove the factory stock on my Benelli M4 EXT to install a Chisel Machining stock. I'm running into an issue to remove the stock, and I haven't seen documented anywhere.

The gun is California-compliant, so the factory telescoping stock was locked from the factory and is not adjustable. I removed a set screw I found inside the stock near the recoil pad post, but the plastic butt still won't rotate or slide off the receiver extension tube. I also noticed the stock release button doesn't depress all the way - it only goes about halfway down before stopping, unlike a standard (non-CA) M4 button. I've attached a photo comparing the two - you can see mine has a small hole/recess in the center where the standard button is a solid cap. I'm guessing this is related to how the stock was locked out for CA compliance, but I wanted to check if anyone knows.

Appreciate any guidance - happy to send more photos if helpful.

 

[ZeroFoxGiven]

I have "pinned" regular Benelli M4 but stocks by drilling and tapping the release button. Looks a lot like what is done to your button. Is the added screw an Allen screw by chance. They either loctite or epoxy threads.

 

[JWP06]

I have "pinned" regular Benelli M4 but stocks by drilling and tapping the release button. Looks a lot like what is done to your button. Is the added screw an Allen screw by chance. They either loctite or epoxy threads.

Hi, thanks for the response. Unfortunately, it's not a screw, no thread to extract. This came from the Benelli factory like this. I have an open question to Benelli support, hope to hear back.

 

[ZeroFoxGiven]

on a regular Benelli am4 Colaspable stock you unscrew the plastic cheek riser and there is a roll pin that holds the button in, if you can punch out roll pin the stock can come off.

Worse case scenario, you have to remove entire buffer stock and buy a new one reusing your old internals

 

[ZeroFoxGiven]

If it is a type of rivet, you could drill it out

 

[AR15barrels]

There might be a spacer and a spring in the latch, limiting the latch button travel so that the stock can not be adjusted in order to be CA legal.
Full disassembly of the latch button from the stock will reveal the issue.

 

[vash00]

Mine doesn’t have all that just a screw that comes out and you can adjust the stock. That’s how it came