Re: MP5 Clone? which one ??
How much do you want to spend? Do you want to use a Registered Drop in Sear or Registered Trigger Pack for full auto operation? Do you wish to SBR it? Do you wish to run a can on it?
If you want to spend the least and have suppressor and sear capability, buy a Coharie or Bobcat.
If money is not a problem, buy an original German HK94 and have TSC Machine or one of the other fine HK smiths give it the SBR treatment.
If you want the closest to German specs and are willing to buy enough 922R US made parts and SBR it but have NO plans to a registered sear then get the Turkish AT94P made on German tooling by the Turkish government. I recently had Lonnie at Run-N-Iron cut and 3 lug a bunch of these pistols for me. All ready for the customer to SBR and make 922R compliant if they wish.
Iron Ridge? I guess they changed the name of the gun when HK got VERY upset about them calling their build an MP5.
Don't under any circumstances buy a Hesse/Vulcan mess. It is NOT roller locked but straight blowback and is virtually guranteed to be disappointing.
Sorry for all of the questions but you have so many choices that I really need a little more info to help guide you. I have sold dozens of Coharies, a dozen or so German and I have several of the Turkish guns in stock. I have not offered the Turkish guns for sale yet as I am waiting to see the ATF's position on using 2 piece FA carriers to bypass the FA bolt carrier block that is in these guns and use them with legal registered FA sears/packs.
I will be happy to delve deeper as I understand what you want. The MP5 system is awesome and even the Coharie guns are running very well these days from my experience.
My .02,
Darin Reiss
FFL/SOT in Haysville, KS