4MOST: MAIT of the high-resolution-spectrograph

4MOST (4-meter Multi-Object Spectroscopic Telescope) is a wide-field, fiber-fed, high-multiplex spectroscopic survey facility to be installed on the 4-meter ESO telescope VISTA in Chile. The back-end consists of one high-resolution spectrograph (HRS) and two identical low-resolution spectrographs. 4MOST will afford with the HRS simultaneous observations of up to 812 targets on a hexagonal 4.4 square degrees field of view at a spectral resolution R>18,000 covering 392.6 to 679 nm in three channels. It is expected to be fully operational early 2024. In this paper, we present the integration and alignment applied for the HRS optics. The results of the tests of the fully integrated sub-system in our integration facility are discussed. The instrument schedule is outlined and the actual timeline of the previous procurement and manufacturing phase is given.