front end weight

I am interested in know more about the front end weights on a couple of guns.  The guns in question are GSP Expert, Ruger MkII 22/45 with 5 1/2" barrel and a Pardini.  I think they are about the same length from trigger to end of barrel, I get this from pictures only.  I think the GSP is heavier than the Ruger, is it?
Jerry showed a picture of a HS barrel that was sleeved.  Why not just cut some off the end?

Of the Ruger 22/45 and the Pardini, the Pardini is weighted more toward the muzzle. At least that is true of the older Nygord Pardinis. 

I recently tried a Ruger 22/45 and it seemed too light. 

The High Standard Victor comes with a HEAVY barrel. The pistol with the 5.5 inch barrel weighs as much as a loaded 45. My only issue with mine is the width of the rear sight notch. It shoots as good as the Pardini, but the irons are tough on my 51 year old eyes. However, Al Marvel in MD makes a rail that replaces the Rib and allows the mounting of a dot on the pistol.

I also found the 22/45 a little light but the cure was very simple. Use caution if you install one of these muzzle brakes. They don't warn you that you need to remove it before disassembly. The little sight screw is not very strong.

Is that legal since it is ported?

It's legal to have a ported compensator for your .22.

It's in here, but I don't have time to look it up:
http://compete.nra.org/documents/pdf/compete/rulebooks/pistol/pistol-book.pdf

Just me confusing CMP and NRA rules. Sorry.