Re: Spyder Mr4 Upgrade Help
Cut the top off, that helps a lot and looks cool. Otherwise, theres the adjustable one that Kingman makes, and Trinity makes several styles. Rap4 makes a few overpriced ones that probably aren't in your budget. Anything that fits the MR2 will fit the MR4.
J&J is my favorite, you can get an APEX adapater for them too if thats your thing. CP is also good, they have a tactical style barrel now that might look cool with. If you're on a budget don't bother with Kits.
I don't know. I would suspect that you could make it work, but I dunno. You'd have to use the ASA off the Imagine too, as the holes on the older markers weren't the same pattern as the new ones.