burbanite

I posted this question after reading several threads on different forums asking for advice on cycling problems with the M1. Since posting I see that just above us there is another instance. I have an M1 Tactical myself and have yet to experience a problem although I wondered if anyone had used one of these things and if so was it beneficial either to help out with an existing problem or just to improve the product. Interested in all opinions.

Anyone ever use one in an M1 Super 90 Tactical?