Anyone add the folder to their SDP ?

I am getting my SDP this week and sending off for my stamp to add the factory folder for a SBR. Noticed from the pics of the right side of the receiver there is a latch point in the receiver for the folder in the folded position . Is there a removable plug on the SDP or would one have to dremmel out the hole in the receiver for the latch? I saw the vid on a DIY adding the folder but no detail on the side latch.

I beleive that the latch is on all receivers

I covered the SDP to SBR conversion process in detail in a couple different threads:

http://www.krisstalk.com/t137-sbring-the-sdp-my-thoughts
http://www.krisstalk.com/t147-inside-the-back-of-the-sdp-w-pics
http://www.krisstalk.com/t227-anyone-remove-the-top-picatinny-rail

Thanks for the detailed links!!!Beltfed rocks!!!