You may wanna give this thread a look:https://www.gatewaytoairguns.org/GTA/index.php?topic=173867.0If interested, shoot me a pm and we'll talk.The kit for the 881 also has a functional equivalent for the breech seal.........Here are the parts for reference.https://www.ebay.com/itm/233777694604?hash=item366e3c878c:g:c2oAAOSwjMFfrDk7I do better for GTA membersAnd, yes, they are easy to work on.Get the kit and I'll provide instructions and any other guidance you may need to get the job done.