Zev technologies core combat 5.56, this is a factory built rifle. 16 inch barrel, radian ambi safety selector, magpul pro flip up sights, bcm vertical fore grip and 1 magpul mag, Less than 300 rounds through it. Super clean, like new. Asking $1100obo. Looking for cash. Only trade considered is for a springfield prodigy 4.25 barrel. Text 4O96593six72 for fastest response.