I built this upper kind of as a dual purpose rifle. Offering it up for sale. the round count is at about 1500 flawless rounds. Its a standard m4 contour chrome moly 16" barrel, chambered in 5.56 and 1/9 twist. sports a larue 13.2 rail, troy low profile gas block. MI low pro flip up hk style irons. ill be keeping the eotech for now so just let me know if you need a bcg. i spent alot of money and time putting this together so im open to offers, please just keep them respectful. feel free to send me a message if you have any questions and ill do my best to answer as soon as i can. the only thing i would be looking for in a trade would be a 12.5" stripped pistol upper plus cash on your end. Thanks for looking