The 9mm will be lighter and potentially have less recoil but the AMOGh firing the 5.56mm will have greater range and penetration power/kinetic energy.
Most PDWs these days aren't 9mm.
A photoshopped image of an IN VBSS team member:
Regretably, the IN VBSS teams are STILL using the 9mm STEN despite the ICG's VBSS teams using the AMOGH now. Why the IN hasn't switched over I don't understand.:frusty::frusty:
@Kunal Biswas