I'm not going to get into any silly arguments with someone who obviously has no experience with the shotguns he "thinks" can't possibly be as reliable as his Remington 870. In the real world, through real experience, I have proven to myself and others, that a number of currently manufactured semi-auto shotguns are every bit as reliable as any pump gun. If you wish to believe otherwise, that's your prerogative and loss. Best of luck to you.
A few ending points to the other members reading this thread:
1. During the last school I attended which was just last month, we had one failure out of the 19 shotguns being used. It just happened to be a new Remington 870. The main problem was that the follower was hanging up and not lifting the next shell for loading. Another issue was that its XS front sight fell out of its dovetail. This isn't a condemnation of the 870, just proof that they aren't infallible. I have decades of trigger time behind 870s, more than any other shotgun made, and they're great, but nowadays I only use my Remington Express Tactical 870 # 81198 as a backup to my 930 SPX. Why do I trust my life to the 930? Because it's never, ever let me down and, yes, it's been shot in all kinds of weather. Further, my duck hunting 930 has been used in every weather condition imaginable: rain, snow, sleet, and freezing rain, and it too has never failed. If it did, I wouldn't own it. I have, on numerous occasions, fired between 200-300 shells through my 930 SPX without cleaning it and with no adverse effect. That's good enough for me.
2. If you don't know you need to keep your gas-operated firearms clean, it's time to sell them. Try not keeping your M16 clean and see how that works out.
NEWSFLASH: You need to keep your autoloaders clean to keep them running reliably! Who knew?!
3. Lastly, does anyone seriously think the Marine Corps didn't test the Benelli M4 for reliability and didn't compare its performance with that of the pump guns it was already using?! I certainly don't.
Take care, everyone!