How to Remove Plugs on Gen 2 M4

[Futuredays17]

I’m new to shotguns and the M4. I was attempting to field strip my new M4 and watched a few videos. 

I didn’t notice my model was different and has what I believe is called a “spring clip”? I bent it, but luckily it went back to the original shape when I Retightened the plug. 
 

So, since this clip is preventing me from accessing the plugs & pistons, how I do go about removing them? 
 

Thank you in advance! 

[John Doe]

Here is a pretty good video that shows the disassembly of the Benelli M4. I have found some of this info useful and maybe it could help you.