this pair of NKVD lieutenant shoulder boards sounds good for me but I would appreciate your opinions . Silk braid parade epaulets are less common. This pair was used with a mundir tunic.
I have another pair of silk braid shoulder board mounted on a NKVD's officer M43 coat ( model with six buttons). if I compare, the color is duller on the second pair.
I'm not sure about the infantry badges. Besides, if one of you is certain to have authentic crossed rifles insignias, I wish I could compare with the different models in my possession.