NineInchNails

Have you tried YouTube? I searched the term 'Benelli M4 Trigger Group Disassembly' and got many results. EDIT: Nevermind, I just saw the pictorial thread so it seems you've sorted this out.

I drilled, threaded and installed a picatinny rail on the top of the receiver of my Remington 870. I installed this MESA Tactical rail and in the description it talks about being a drop in fit for the Benelli M2 as well as the M2 Tactical. I think you're good to go with any M2 Tactical compatible rail if you don't want the MESA Tactical part. I bought this thread tap and this drill bit. A lot of people recommend buying multiple thread taps if you break one, but you really do not need more than one. Just tap nice and easy, use lube and often back the tap out and clean it. If you do that for each hole you will not have any issues.

I have a Benelli M4 and I used the Bobro Aimpoint Micro Mount B13-111-001 with a Vortex SPARC II. That Brobo mount is the lowest mount you can get. I believe ADM makes an equally low mount and should be a bit cheaper too.

Keep us up to day. I'm curious what you find out.

That's strange. All I can think of is to be absolutely sure it is assembled properly to begin with. If it isn't, the parts would become loose real quick. I presume you do have it assembled properly. If you don't, it would be pretty obvious. I would probably visit the vendor, show them what's going on and maybe they'll swap it for another one. The sooner you do this the better. If it shakes loose with stock parts then there's an issue and you shouldn't have to figure it out or buy aftermarket parts to correct the issue.

****man74, what optic is that? I put a Vortex SPARC on my M4 with a Bobro Low QD Mount. I like to keep my optic as LOW to the rail as possible.

Thank you very much calviroman. This is the first time I've ever seen that mount. Finally a lower priced alternative to the AVA Tactical mount!

calviroman, which QD sling swivel mount is that? Looks like it also serves as a light mount? I've never seen one like that before.

I have one. It came stock on my Benelli M4, but I replaced it. I still have it and it is in flawless brand new condition. PM me if interested.

I bought mine from FFT and it is very very nice and just as I had expected. After examining my full length tube closely ... I cannot imagine how anyone could make one nicer. I'm not saying anyone else is wrong, I'm just saying I have never seen a CC tube in person to compare. I did consider waiting for a CC tube, but didn't see the point of waiting so long when FFT ships theirs out immediately. I saw pics online comparing them side by side, but still saw nothing worth such a long wait. Many report receiving a tax stamp quicker. I did like the thought of getting a titanium tube so that's what I went with and I'm very glad I did. I don't think you'll go wrong with whatever you choose! You'll love your M4.