Perfect length for a sbr - Aero Precision M4E1 Threaded 11.5in 5.56 w/ATLAS R-ONE Handguard Upper Receiver with Flash Hider

Great quality product for a great price. I do wish handgaurd was a little longer, but I knew the length when I ordered. Has a nice and tight fit up in my lower (aero m4e1). Went out and put 80 rounds through it so far (hornady black .223 75 grain) shoots around a 1.25” at 100 yards. Couldn’t ask for much more especially at this price point.