In good shape but does have a bit of play in the top rail which is common for the KM4 series. Dust cover and mock bolt is all there and is functional. It will only fit KM4s (SR, KR, CQR, etc) it will not fit VM4 or 2.5s or ERGs. Thanks for looking, message me with any questions. If I don't reply, please feel free to send another message. Sometimes they don't go through or I miss them. Accepted payment methods are HopUp payments, PayPal, and Cash App. PayPal is preferred. Tap my name to see my other posts!