Just shot my first GSSF indoor match. The match its self was good, for making you use your iron sights. Mainly it was a bullseye match on NRA-D1 targets, parper instead of cardboard. The only thing I saw was wrong is that, the indoor range that we shot the match at, was not well organized. Opening times were changed, match did not start on time . All in all it was a learning experience. Shooting in doors will make you focus on your sights better. Did fairly well 478 out of a possible 500.