I posted this on the main page by mistake so I am posting it here!
I bought used FX 400 last month and love the gun,but after several attempts to adjust the trigger I figured out there was a spring missing, it is one that goes down and puts pressure on the sear! Well to make a long story short I called AOA and talked to the parts dept. I asked him if they had any in stock, he put me on hold for 10 seconds came back and said yes they do have some in stock, we will get one off to you send me your mailing address via email. I sent him my home address and one was in my mail box within a few days, "FREE" of charge! just thought I would pass this along, we here bad things sometimes and seem to skip over the good things about allot of the place we buy from!