How do you remove the sights on a Remington 1100 slub barrel?

First pull back the slide until it locks in a open position then remove the end off of the forearm and then remove the forarm then proceed to remove the barrel.

You can request a owner's manual at the Remington web site.

NO. But both these barrels are easy to remove and replace and there is a wide selection of factory or aftermarket replacement choices available for both guns.

NO, DO NOT ATTEMPT TO DO SO!!!!!!!!!!!!

Your best source on information would be to contact Remington via their web site.