contender
Ruger Guru
I have a stainless steel chamber insert for a 12 gauge shotgun, to accept .410 shogun shells. It's not marked with the maker,, and I got it in a trade, so I do not know it's history. It takes 2-1/2" .410 shells. OAL is about 3"
$35 shipped. Check or m/o only.
$35 shipped. Check or m/o only.