This is a RECCE barreled upper that I had built for me by JTAC Supply. It is a WOA 16" medium contour stainless match grade mid-length barrel with matched bolt. It is 1-7" twist, has the enhanced bolt carrier, Daniel Defense 12" rail, and 3 Falcon rail covers. This is in as new condition as I only fired 20 rds through it to sight it in. I had used it with a Rock River lower which was a very tight fit and which caused some removal of annodizing on the rear lug. This will not hurt a thing. I did have a scope mounted on the top and you can see evidence of this. Overall, a very nice package. SPF shipped and insured. I can take a check or money order, but no PayPal.