Final orbital period of the MSP binaries formed via AIC as a function of WD mass, evolving from main-sequence donor stars with a metallicity of Z = 0.02 (upper panel) and Z = 0.001 (lower panel). The different symbols refer to different kicks during the AIC. The filled green circles correspond to w = 0 (no kick), the open pink stars to w = 50km s^-1, and the filled red stars are for w = 450km s^-1. The symbols connected with a black line are for the same pre-AIC binaries but different values of the kick, w. The dotted line is the (M_WD,P_orb)-relation taken from Tauris & Savonije (1999) and applies solely to low-mass donors with degenerate He cores. The blue triangles in green circles are explained in Fig. 3. See text for further details and discussions.