48 C.F.R. § 536.102
Construction-Manager-as-Constructor (CMc) means the project delivery method where design and construction are contracted concurrently through two separate contracts and two separate contractors. Unlike the traditional design-bid-build delivery method, under the CMc delivery method, the Government awards a separate contract to a designer (i.e., architect-engineer contractor) and to a construction contractor (i.e., CMc contractor) prior to the completion of the design documents. The Government retains the CMc contractor during design to work with the architect-engineer contractor to provide constructability reviews and cost estimating validation. The CMc contract includes design phase services at a firm-fixed-price and an option for construction at a guaranteed maximum price.
48 C.F.R. §536.102