These feednecks will not only fit the Impulse, Shocker or Ion, but will fit all the newer designed Spyder's as well. They will fit the newer Spyder's such as the '08/'09 Electra, '08/'09 Pilot, RS and VS series and all other current production Spyder's that have a threaded feedneck orifice. It will fit the SPPS MR series adapters or any other marker that has a similar thread as well. Add a few drops of red Loctite to the threads, screw it on and whammo, your hopper isn't going anywhere after it's been tightened down. You won't find a better deal on these quality all aluminum feednecks anywhere.
With CCM's unsurpassed customer service, fine quality and craftmanship, there's no better choice if you're seeking the unequivocally best components available for your marker. Don't be fooled by manufactuers that will offer you a cheap feedneck with inferior milling made of cheesy pot metal materials. You'll just end up spending twice as much when that product cracks or fails you while playing.
** Due to the thin thread of this product, SPPS & CCM will not be held responsible for a customers inadvertent crossthreading mishap. Please be careful when threading these components together.