You just need to know that it works just fine and doesn't leak. The nice thing is that unlike a Star framed Etek/2 you don't have to check for the QEV diaphragm and unlike any Etek/2 you don't need to check the solenoid.
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You may call it fat, I call it bounce padding.
Listen closely into the breach for leaks. If it leaks down the barrel, change the orings. If it still leaks, make sure it is not a valve of ram housing issue before you buy it.