From what I've seen the Norc "copies" of other pistols are summed up as "rough copies" of the real versions. Fit/finish/"smoothness" is where you'll find the most obvious differences. Durability of the parts, pieces, finish, etc...are a bit less obvious. They'll usually go bang when you want them to but if you're the picky type or like "fine things" you may find yourself wanting other things as soon as the "new gun" itch has been scratched (especially since in the process of actually being able to make it go boom for the first time there's often a delay or wait). In the end...it's up to the individual as to what's good enough for themselves.
So far as accessories/etc...being a "rough" copy of something at 1/3-1/4 of the price it would be fair to say that accessories should, but may not fit/work. The devil will be in the details an while all the parts/grooves/notches might be there...they may not be held to the same tolerances/specs as other makes. Things like slide weight might differ as well so springs and stuff like that may not have the same effect. Might work, might not. A buddy of mine has several Norc guns and is just fine with them. Another has tried several and poo-poos them in comparison to the real versions.
Re. the STATT/LTATT, clubs, etc....I won't comment on the "technically" this or that. But I just went through the process and while I can't say it's the same for every club, here's what it was for me.
* Already had my RPAL....
1. Joined Silverdale...paid, took little club orientation same day, got membership card...all done same day.
2. Bought a pistol...paid for it, went home, hid the bill from my wife, waited for STATT. Pistol stays at store...store will call when they have STATT.
3. A week later got the Registration cert for the pistol in the mail from the CFO. Says I own model ###x serial number yyyyy
4. About a week later, maybe a bit more, I get a call from the store saying that the STATT is here and I can come get the pistol....take reg cert, RPAL with me and go get pistol. Take pistol straight home...lock it up appropriately. *Make sure you have a trigger lock (or some other pistol disabling device) and a lock for the pistol case!!! I was lucky that I had some extras in my range bag....if you have pistol ammo that needs to be locked separately from pistol. STATT is now useless...it does not permit anything else and pistol must stay in the residence that is listed.
5. Sign up and wait for club ATT course.
6. Take course (half day), notify that I have a restricted pistol already (they put in the LTATT application next business day if you do...otherwise you have to tell them when you have one and then they'll put in your app) and do first probation shoot (4 required)
7. Do other probation shoots...once the shoots are finished the club will give you your ATT if it has arrived (otherwise wait)
8. Club gets LTATT...lets you know
9. You're good to go back and forth to that club...or any other CFO approved restricted range that you have an "invite" to (an invite can be a letter printed from that other club's website, it can be an e-mail from a member saying 'come shoot with me', it can be the competition schedule for IPSC/IPDA matches, etc...)
Time elapsed for #2-4...about 3 weeks.
Time elapsed for #6-9...about 4 weeks.
Compare all that to buying/shooting a non-restricted rifle.
1. Walk into store...buy SKS and crate of ammo...hide bills from wife
2. Go to club
3. Shoot
4. Go back to store to buy more cleaning stuff, ammo, another rifle, etc....LOL
My understanding is this (at least for those clubs I've looked at)...If you are a member of a second (or third/etc..) range you may be required to do their ATT course and to do their probation shoots. They may waive some or all parts of that on a case by case basis....dunno, ask them.
Your LTATT will have a "home range" on it. It will only have one. If you want to make your home range one other than whats on it, you need to have the CFO make that change (via whatever paperwork required). Your LTATT is valid until your RPAL expires (at least that's what mine says). Both must be renewed.
Your club (at least Silverdale does this) will renew your LTATT for you when the date is coming up...you need to renew your RPAL. If you are not a "member in good standing" (i.e. haven't paid up, etc...) then they will notify the CFO and have your LTATT canceled. I believe that club may give you a 2 month grace period to settle up...but dunno, ask your club for specifics.
Hope that helps