jammed

My FNS-9 had problems last time I was on the range. Inserted mag, pulled the slide back, first round hung up and wouldn't go into battery, which lead to an overall jammed situation. Eventually, was able to pull the mag out and clear it. Tried another magazine. First round went into battery, but...

I have the fn 5.7 handgun. I have only put maybe 100 rounds down rage with it. I keep it cleaned and lubed. I purchased new ammo today the ss198lf and it jams every shot. So I put the ss197lf in and had no problems. The 197 if 40gr and the 198is 27 gr. I'm not to sure why this is happening. It's...

The hammer's back and it won't drop when you pull the trigger. Not only that but when you go to decock it the hammer only goes halfway back. Not only that but the trigger won't go through it's full range of movement, even on safe. How would I get this fixed? Any help would be great!