A new feedneck might be a worthwile upgrade on a marker like the 05 Xtra. The stock arrangement of the aluminum stovepipe and plastic straight elbow is pretty poor.
There have been a number of different Spyder feedneck styles over the years, so to make sure you get one that's compatible with yours (assuming it is in fact a 2005 Xtra), you're going to want to find one of the "tabbed" variety, like this one: http://www.ebay.com/itm/LOWRISE-ALUM...em3f4f82 6641
You may want to double check that, though. Make sure that your gun's feedneck is secured by two tabs and not tabs with holes through them.