While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
Note: This feature may not be available in some browsers.
If your pistol is in 40 and your going to 9, I believe you'd only need the barrel, don't quote me. Sig barrels seem to require the least amount of fitting, compared to the aftermarket. Sorry I couldn't be more specific, you'll have to research it.
the Cabelas store in Edmonton has/had them forsale when I bought my Classic..they were roughly 300 bucks at that time..check online or in a store near you..sometimes they have an online coupon for 10% off that you might be able to use