Selling my home made super duty . Only has 200 rounds though it all flawless . It has an Odin works set screw adjustable gas block which I know is the worst kind but it came with the barrel and where I have it at now it runs suppressor or unsuppressed without a problem. Running a kak reduced gas bcg on it and a centurion trigger . All lower parts are Geissele. Price is without Aimpoint .