A bone implant system is provided including a bone graft body having at least a demineralized surface for implantation at a bone site, the bone graft body including at least one attachment member. At least one bone delivery carrier including a covering is provided, the carrier configured to be attachable to the bone graft body and including at least one compartment. An affixing member may be provided for attaching the at least one bone delivery carrier to the at least one attachment member of the bone graft body. A demineralized bone matrix material is disposed within the at least one compartment, wherein the covering retains the demineralized bone matrix material for placement at the bone site and facilitates transfer of cells into and out of the covering.