HH Jps all sound like they are no-nano...wrong sound files associated maybe?

There is just something about no-nano weapons that I cant stand due to the sound they make when fired (I can always hear the ping ping ping sound on top of the report). Well my AZ and Xaphan both have that sound to them rather than the sound rad and fire nanos sound like. Is it possible a sound effect was omitted or disabled due the addition of the blood spray effect?

I have Turtle Beaches and am ocd about the little things that sound off. lol

p.s. Its just the jps...I have every nano of the RIP brs and smgs, and they sound as they should.