Googled using: Mexican 1910 Mauser "receiver length" got the following from Hoosier Gun Works:
2) M1910, M1936 Mexicans by FN and Mexico, 1.30 diameter. receiver ring, 8.50 in length, with screw spacing of 7.620. Barrel Shank .980 Small ring have a threaded shank diameter of .980 in. With 12 threads per inch The barrel is a 4-groove with a twist rate of 1:9 Receiver is slightly different from other Small Ring. Mauser (Bolts will not interchange with any other type Mauser). Receiver stripped weight 15.2 oz.
Hope this helps - Hoosier's website also has info on the other Mauser models.