So these were built using quality parts like BCM and Griffin and criterion. All uppers were built using BCMs blem uppers, so all barrels are thermo fit. All have been test fired and all work flawlessly. The one with the LVPO has the criterion barrel and an adjustable gas block. Softest shooting AR listed. It’s the hybrid barrel so 16in with rifle length gas system. All lowers have the BCM mk2 (vltor a5) buffer system. Really too many specs to list so just ask away for the one you’re interested in. I can swap lowers as well. The one with the BCM raider rail has the Griffin mk2 FULLY ambi lower. Price will be negotiated, but full rifles will be no less than $1000 and could be more depending on optics if wanted. Just hit me up with ques. Number is 317-4one6-two14seven