Picked these accessories up some time ago from KB Toys. They're part of a line called "Front Line Defenders" and each set costs $2.99. I know there's at least one more set out there that I passed up recently. They seem to come and go in stock frequently.

Even though some of the accessories are useless, you get at least one usable rifle, pistol and knife with each set, which is well worth the low price.
Most of the rifles come with clip on scopes and spare clips that can be attached to the loaded clip (see the pics to better understand). I'm probably going to clip off the triggers, as they block the figures finges from fitting through the trigger guard.

Click on the link for the whole album:
http://s19.photobucket.com/albums/b1...ies/?start=all