I just picked up a 20ga Remington 1100 LT in full synthetic with a rifled barrel for my son. I want to add a 26" modified or rem choke barrel for him, but they are hard to come by, so I reached out to Remington and they told me that a new 870 barrel would work on it. This doesn't sound likely to me as the 1100 has a completely different barrel design and gas porting as far as I know. I've been trying to research this, and all I see is confirmation that this won't work. Any thoughts? The 1100 I got is the 20ga full synthetic, rifle sight, rifled barrel model, produced in 1997 with K serial ending, current barrel is full tang. Thanks for any input!