Pretty good little sight - HiViz Spark II BD1007G

I bought this for a 410 Mossberg shockwave and this small sight fits well on the small barrel and looks good. It's kind of a challenge to install because of the tiny insert, and I have thin fingers. You definately don't have to worry about any excess threads protruding down into the barrel because the insert is short. Contrary to the directions, I just screwed the correct insert into the sight base with some blue loctite, then threaded it into the hole with loctite and it was easy to line up with just a slight turn with a small cresent wrench. Worked out really well in my case and is a nice improvement over the beadsight.