This rail was only installed on rifle, rifle was never fired with this rail on (safe queen). There are no scratches or wear marks just one tiny little ding where the rail meets the lower receiver. I decided to change this to a lightweight build with a shorter rail otherwise I love this rail. There's plenty of info out there on this rail and if you are interested I'm sure you know the specs and such. As you can see in the pictures it's in great shape, purchased from Rainier Arms about a year and a half ago, includes instructions, barrel nut and screws. Also bought an extra shim pack from Spikes tactical to center the barrel nut because they did not provide enough with original purchase (also included) paid around $225 w/shims will take $170.00 shipped. Seen others 12" BAR rails go on here for around that price that have seen more use and do not include the shim pack so I think that's a fair price. Paypal only, If you have questions ask away, I am not always near my computer so it may take me a little while to respond, Thanks for looking.