EAA in Florida is the company that imported the IZZYs. I ordered replacement screws for the rear sights years ago. (If you get one you will know what I am talking about. Hint...be careful.)
My friend in Kansas has one. He has 20 acres and shoots every cowbird in sight.
He estimates he has fired the pistol 25,000 times (he is the 2nd owner).
Remember to close the bolt before firing or you will be buying new seals.
O-rings/seals are available everywhere.
The original grips were made oversized so that you could modify them as YOU saw fit.
I have (still have one) had three IZZYs.
I modified the grips on the first one with a Dremel and they were great. Sold the pistol to a fellow in Ohio.
The 2nd one I gave to my son in AZ.
I added the Air Venturi trigger to mine and it makes all the difference.
I have 15 yards in the downstairs hallway and hardly a day goes by that 50-100 pellets are not fired into the trap.
My IZZY wears Corcoran furniture.
I shoot it with open sights, a Millett Red-Dot and 2X Leopold as the mood suits me.
I use it for Air Pistol Silly Wet, too..
MAC1 has a re-build kit for around $80.00..
One thing I do that is not mentioned in the manual. I leave the pistol with one pump when storing. I leave the bolt out of battery as required but the one pump I have been doing recently. We have been told to leave air in the Benji and Crosman pumpers so why not the IZZY??
Good luck..