I had this mounted on my 5.56 Carbine so it has the gas tube attached still/ the gas tube has a little bit of spray paint on the out side of it and the sight has some light surface rust but gun oil helps get rid of that + a few small scratches marks where ive zeroed the sight in . Uses hex screws to mount so its real easy to put on and take off, It is the same sight shown here : http://www.midwayusa.com/product/560266/pri-gas-block-with-flip-up-front-sight-set-screw-mount-ar-15-lr-308-standard-barrel-750-inside-diameter-steel-matte?cm_vc=ProductFinding
If you are interested you can email me and I will send you pictures on request.
Looking for $150 - Shipped , USPS Money Order as payment. Would be willing do partial trade for a low profile gas block depending on value and make etc.
Thanks for looking .