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1. I think it would be beneficial to get a small video from you, locking your stock into position clearly showing what you are doing so we can see exactly what is going on, with a detailed shot of the buffer tube where your buttstock is. 2. Are you certain you are not in the "off" slot? Meaning, you think you are locked into a position but in fact you are half way on the off slot, and when you fire the stock jolts off the slot and back onto the flats and collapses? 3. Does the stock rotate to the right when it collapses or does it remain in the correctly timed position? 4. Are you using the legacy stock or the new supernova stock? IMO the rate of fire has nothing to do with this issue.

Agreed. What a "welcome" to the forum. 🙄 The gun has an issue that needs to be toruble shooted. Would love some info on this. Someone must have experienced something similar before!

Bought a brandy new LEO Benelli M4 with full working collapsible stock. Functions great, very reliable and a good shooter. Only one issue, when in position 2 (the mid position) the stock auto unlocks and collapses itself when rapid firing 4 - 6 shells. I'm not even talking high powered stuff, just light birdshot will do it. Putting it in the mid position and rapid firing 4 - 6 shells, the stock auto unlocks, and collapses while firing. By rapid firing I mean pulling the trigger close to as fast as you can. I called Benelli customer service, they asked me to send the shotgun in. Did so, the tech said nothing was wrong with it. It turned out that he just fired 2 to three rounds normal speed (not rapidly) figured I had the stock in the "disassemble" notch (I didn't) and said it was fine. Called up to complain, they sent me a new stock, said maybe the old one was faulty. Put it on, tried it. Experiencing the same issue... Has anyone else ever experienced or heard of this issue happening before? What can I do now at this point? Thanks!

Exactly. Like racing a car, or anything else "with no practical purpose" it can be fun to mag dump, and it's a good way to put a shotgun through it's paces and ensure that is is properly cycling. If my AR, or glock, would choke when rapid firing, then it's an issue, same with a semi auto shotgun. During combat, one may need to fire off a few rounds in rapid succession. Though some don't "believe" in semi auto shotguns and think everyone only needs a pump. But this is AMERICA, we are free to choose what we wish. Let the Fudd's keep their pump guns! The other issue is, that if the stock is collapsing when it is not supposed too, there is likely something wrong that is not a design flaw. That issue could present itself during another situation, IE if one is firing stout recoiling magnum loads. Obviously, have the gun do anything it's not supposed to do it cause for concern.

I am testing the shotgun and putting it through its paces. I discovered an issue that is not supposed to happen with this gun, so it needs to be fixed. If it happens during this scenario, it could possibly happen some other time.