I got a couple of extra barrels, extractors and springs too--for the same reason you did, Fireball
I should grab a couple spare firing pins to, as that is supposedly the weakest part of the action.
I was wondering, I don't see many flash hiders like the one that is on my rifle on to many others. Is that some sort of aftermarket thing? I have a friend with an FN-49 and his has it, but most of the ones I see listed on Gunbroker don't have it. Anyone know what the deal is?