Is anyone using one here? How much does it help?

www.gothammarketing.com/bb/waltherforum/cgi-bin/ikonboard.cgi?s=bc2a44114d521b9e5b5aaac3037295e8;act=ST;f=1;t=3358

Here are some opinions

Thanks Uncut!  Useful info.  I will probably not spend the money on it.

I have one.  I just bought it to reduce frame wear because my P99 QA is my first plastic gun and I am nervous (yes I know it is silly) about plastic guns.   IMO it has has a bit too much tension in the mainspring (it also has a subspring).  Much greater than the factory spec.  I am going to write Springco and ask them about buy a new spring so I can cut it down or see if they can sell me a cut down one.

Other than that, I have shot thousands of many types and brands of rounds with it with zero problems. It is however a slight pain to get back in after taking it out (not really a big deal).  You will notice that the factory plastic unit flexes a bit; the Springco device is solid metal and does not  flex when the slide is off the gun so I have to snag it with a finger and push down to get the rod to allign.