I've done an am still working on all kinds of Me262 variants, both hardware and paper stuff. If I'm double posting, some of this goes back some years - my oops.
To start, a Me262 with a Mk212 55mm cannon alternate to the better know Mk214 50mm, based on the Hobby Boss kit in 1/48. Other than the gun, scratch-built but basically a scaled up Mk108, I covered the somewhat heavy panel lines on the kit and then added underwing R4M rocket racks from a Tamiya kit in an operational heavy bomber destroyer.