fuzz,
the RA and Rabitech muzzles differ in ID only. sherryl sent me an RA muzzle for my rabitech and it didn't fit. but nevertheless, ivan got your question.

the key to your quest for multiple guns is this.... buy 2 guns "whole" and then purchase the other barrels, shafts, muzzles and bands you want separately. the trigger mech is what's pricey. i bought a 110cm barrel from sherryl for $35. muzzles are about $12 and stainless steel shafts about $45. what i'm trying to say is that the handles are easily interchanged. i have one handle for my 110 and 130.
later,
A