Fix positioning of AKMS on soldier in first person

[Leroy231]

To try AKMS use client net mode with 2 clients. The RU player will have AKMS.

Here's where M16 is positioned when raised (but not ADS):

Here's the same for AKMS (it should be higher up so you can see the hand a bit):

Here's M16 ADS:

Here's AKMS ADS (should be moved closer to eyes like M16):