100-1000 depending on specifics
Price varies depending on which version, condition.
100-400 USD
To my knowledge the 1100 Tactical is only available in 12 gauge. The 12's can be had from about $700-$800 maybe a little less. I paid $675 for mine at a gun show in Las Vegas
No, a 12 gauge Remington 870 barrel will not fit a 12 gauge Remington 1100. The two shotguns have different designs and systems; the 870 is a pump-action shotgun, while the 1100 is a semi-automatic. Their barrel attachment mechanisms and receiver dimensions differ, making them incompatible with each other.
$1100
The 1100 designation for a Remington shotgun is the model number. Remington makes the 1100 model in a trap version and a field version.
You can request a owner's manual from Remington's website.
400 dollars
from $100 to $400 depending on condition and barrel.
The Remington Model 1100 shotgun is still in production, hence it would be worth no more than list price - and probably less, if it has been used at all.
$600 around there $600 around there
100-1000 depending on specifics