I found a good deal on a Springfield 45 acp with a 3 chamber comp.  I am assuming that it has a threaded barrel with a cone.  I didn't pick it up because I wasn't interested in the gun with a comp.  I sold all my comp guns long ago.  
How much trouble is it to fit a bushing to the barrel? I am thinking that if it is a comped gun, it might have some good stuff already done to it.  If it isn't that big of a job and expense, I might go snatch it up.
Thanks,
Crabo