its a great gas block ive had mine for a year and a half.
only thing is i dont like about it would be it isnt magpul friendly
and you need a thick outer barrel that way it can actually tighten and not come loose
but other then that its great i have it on my king arms custom that i built
This looks much better than the stock iron sight on my Echo1 M4TC that I never use. The all around rails made it grat for attaching my light, laser, and 203 sight. Thanks Evike!