SOLD P/F. Unknown manufacturer, heavy 11.5" barrel assembly. Non-chrome lined, looks like 1/9 twist. Comes complete with delta ring, gas tube, A2 front sight with bayo lug, CAR hanguards, A1 flashhider. This is a take off from an extra upper that came with M16, low rounds per previous owner. Very nice condition. $75.00 plus shipping. Thank you, Vail.