I have a vr80 and as long as I do my part ( keep it clean and oiled) use ammo it likes then I expect it to function as reliably as my pistols and rifles. But it does need to be cleaned more often, in a nutshell I expect it to fire everytime I pull the trigger and do it reliably. It's does as long as my part. I don't think I would go much past 100 - 150 rounds without cleaning the gas system, I have shot 500 rounds of 00buck with only 3 failures, gun was dirty. Sent from my Moto E (4) using Tapatalk