Issc is a joke. Don't waste your money. I had one nothing but problems. And the price is outrageous . Trust me save your money
can you please provide some more context to help OP understand?
A lot of these editorial type comments about it sucking with little to no context aren't overly helpful when making a purchasing decision.
It would be useful to know:
-what issues you were facing?
-when you purchased the rifle/which generation? (the latest to hit the shelves have the fixes applied, as with any first generation firearm there are growing pains/kinks that need to be worked out)
-any fixes you tried? (It's been stated about the fixes to common issues, 90% of issues Ive heard of can be remedied with an allen key and loctite)
-did you clean the rifle? (dirty chambers can cushion the casing upon FP impact resulting in a light strike)
-what ammo were you using? (low or standard velocity rounds have been known to be problematic. Furthermore I have had stovepipes due to cheap/poorly seated rounds in a casing.)
All these really can have an affect on the rifles performance much like with any other other rimfire semi-auto.
Also as rootzee mentioned mossberg does make one too, i did forget about that one as well. It does come in significantly cheaper than the MK22 and the SR22 but there is a difference in ruggedness.