If your still using a rev without intellifeed but have a 12-volt revolution made after Brass Eagle took over Viewloader and hate the delay this could be something to look at. I got 1 in my rev and it works just like my other true pre BE rev. But remember you can only use it in a black rev. Or paint the neck of your gem series with black spray paint. Damn i love it =\.
Just go to revolution parts and scroll down. You'll see it. They also got pre BE colored and non colored shells. I'm pickin up a pair of old style black shells too.