This is best stripped AR-15 billet upper receiver money can buy. We take pride in our manufacturing trying to make better than mil-spec; and we did. Made right here in Arizona and cut out of a solid block of aluminum machined down, not from forged uppers which is weaker and easier to make. No, this USA made upper receiver can hold up to almost anything. This is what you want for your premium AR15 builds. Also, this looks great on both forged and billet AR-15 lowers. We even use this one on all of our colored AR-15 upper premium builds here at Veriforce Tactical.