Yes it is a direct fit.
After looking very closely at the detail parts assembly i think they will, if not they can modified slightly to fit perfectly. I have 3.5" semi auto Charles Daly and shoot reflex sights on all the shotguns i shoot, the only scope rail i know of is a B-square that sits a half inch high on the receiver and then the sight will be even higher, i have this set up on it and the sight plane is too high for the factory stock. So I'm gong order a shurshot(remington) for it and I'll be sure to post the info when done. BTW the 1100 shurshot stock looks like an exact match when staring at the owners manual of both guns.
for the NEF pardner pump 12 gauge all stocks that are compatible with the Remington 870 12 gauge shotgun will fit on this peticular gun, for NEF single shot pardner shotguns, ATI technologies make a adjustable tactical shotgun stock for this model
NO
Yes they are interchangable.
You will not likely find a Remington stock. I put my 722 in a Bell and Carlson stock and I love it.
No, the Remington Model 1100 stock has a hole (recepticle) through the inside of the stock in the pistol grip area to accept the action spring tube. The Remington Model 870 stock has no need for this hole so the 870 stock will not fit on the Model 1100 action.
Probably not but call your local gunsmith
no
No
no there are some minor adjustments to the safety area
no
Sorry, no answer from me, but I would like to know the answer to this question as well.