Caseman
I have the 9mm Springfield also, I guess it's the same as yours. Personally I like the FLGR, but the gun will run fine with the GI part. The FLGR is just one of the "loaded" upgrades.
My Springfield does not like light or target loads (such as WWB 115 FMJ). It shoots them very well, very accurate and low recoil, but only about 50% of the time will they lock the slide back. I have ordered a 10lb recoil spring to see if that will help (factory is 12lb).
I have tried some WWB 147 JHP, and those worked perfectly. No issues with slide lock and shot to same point of aim. I would stay away from Georgia Arms 9mm, nothing but trouble for my Springfield. It may be worth saying that in 45ACP I have nothing but good things to say about Georgia Arms, that's what I shoot in competition.
The Mec Gar mags seem to work better (also at
www.midwayusa.com) than the factory mags, but they aren't drilled for basepads. Wilson Combat tells me they are working on a 10 round mag, that will bring joy to IDPA shooters. With time and practice you can get very fast with follow up shots using that 9mm.