A 870 is not a truck, or a sports car
Its a shotgun, and a shotguns function is to fire shotgun shells. Load up the magazine with quality ammo and rack the slide to chamber, fire and then rack to extract and reload the chamber. If it can not extract or jams up while trying to extract then it has issues. If those issues are fit and finish and quality in machining that is imposing on its design function, then its defective. That is it will not properly perform its design function.
Its very sad to see just how far down the rabbit hole this manufacturer has fallen! I have my Grandfathers 870 Express from the mid 80's, he passed on and it found its way to me. It has never been cleaned, EVER! The only special treatment this gun has gotten was a squirt of WD40 once every other year and a paper towel wipedown. It does not jam, has never jammed and just keeps going. This is the kind of quality that is expected when one invests in a 870.
My Mother has the family Mossy 500. It rode in a ARGO 8x8 for a couple of decades without being in a case or holder, just thrown in the back. It has loads of rust, no bluing left and has been beat to H#ll and back literally. It now looks like it was retrieved from the bottom of a river and put away wet without care! Oh, yeah, that is true, it went to the bottom of the river a few years ago and was put away wet to rust after a boating accident on a river. It still functions like it did 30 years ago, no jams and no misfires.
If a gun like the above examples can perform better than a brand new gun from a quality manufacturer for $600.00 dollars after abuse and no care then there is something very wrong.
Pump action shotguns are some of the most reliable firearms ever created, bomb proof and will not quit comes to mind when the 870 model is remembered, too bad todays examples fall very far from where their ancestors are.