FWIW, I have the Spikes kit from Questar.
I had a couple issues with mine doing a double tap. Cleaned the hell out of it and then it was fine. Some may think this is fun, I think it was dangerous.... got rid of it. Also caused a dirtydirtydirty chamber.... worse then normal.
I love my CMMG conversion kit. I highly recommend it.
Don't they have a tendancy to clog the gas port/gas tube due to the soft lead bullets ?
I love my CMMG conversion kit. I highly recommend it.
I second that.
Wow, that dedicated upper is cheap, and in stock. Polymer upper though...



























