Can't say for a Shadow but it was pretty easy on my Tactical Sport. I did need to remove a little material to get it to fit right.
Didn't we go through this on the last thread you posted about magwells?
The stock mags will not work anymore. The edges around the base of the stock mags will not let the mag go in far enough to seat if you use a well. You'd need to get new mag bases that are just straight blocks with no little "foot" at the base.
You'd either have to trim plastic basepad on 10rds mag or replace those with aluminum ones for flush fit. Added weight of alum pad will help to speed up mag changes. They are pricey thou.
Yea but I watched a video where it took the guy 5 minutes to put it on, where as you said I would need a gunsmith for sure... It didnt seem more complicated than the recoil spring I replaced in it. Also they showed it with 19 round magazines which is where I got confused as to the 10rds working.



























