This takes place thousands of years in the future, and you want bows and arrows? however "techno" the bow may be, it still makes more sense to load the projectile in a gun, and fire it (power, efficiency, etc).
Dropsuit command skill reduces how easily you are spotted by enemies, and there will be some form of cloaking coming.

Seriously guys where's the 'Dislike' button on this forum?

The Minmatar would those "techno-bows"...
but seriously, no.

Why not create a stealth gun for silence? or a silent version of an existing gun?
Still makes no sense why they would waste high tech stuff on a bow, and not just fire it from a gun.

Because it's a silly idea, if I am to be generous. This isn't Turok, it's an intergalactic war, maybe you can tell me what soldiers you see on the battlefield with bows and arrows instead of just silenced rifles?

No it's not. In an argument you have a positive and a negative assertion. The onus is on the person making the positive assertion to prove his argument, this is called the burden of proof. To give you a real world example imagine it's a court case, you are the prosecution (the argument is true/the accused is guilty) and I the defense (the argument is untrue/accused is not guilty). As the defense I don't have to offer up proof that proves the accused not guilty/the argument untrue because lacking a valid argument that it is true the accused is assumed innocent/the argument invalid. Incorrect. Even if it were just personal preference a techno-crossbow in a setting like New Eden is a thematic oversight that makes no sense. But if you need a reason it's because it's infinitely simpler to make a silenced weapon than it is to make a bow of any kind as powerful as a rifle.

Or we could just have a silenced rifle since a crossbow makes no sense in the setting anymore techno-slings or techno-lances or techno-ballistae. The crossbow is outmoded by guns, end of story.

After Training Electronics to Level IV just train Cloaking to level IV and buy a Tech II Covert ops Dropsuit cloaking device.

Only one problem with that.

As soon as you fire a shot, or even do stuff, your cloak is deactivated.

Compared to a modern assault rifle (5.56mm NATO, M-16 family, standard 62 grain steel bullet) a modern crossbow (175lb draw, 420 grain projectile) or modern bow (70lb draw, 350 grain projectile) generates approximately 10% of the force.

In other words, a modern day assault rifle is ten times as powerful as a modern bow or crossbow.

Or, more meaningfully, a modern now or crossbow is ten times less powerful than a modern assault rifle.

Compared to a hunting rifle, the disparity is even greater.

So, assuming the weaponry of projectiles managed to evolve equally, a bow might make a heavy cough if it hit center of mass.

Now, that's assuming equal evolution of capability. We are assuming that the idea of a bow - essentially, elastic material providing the force to drive a projectile forward - will somehow evolve to the same extent that simple projectile ammunition from today has evolved to plasma rounds, etc. in DUST. In order to keep up, a bow would have to break the fundamental laws of physics. It would have to put out significantly more kinetic energy than it has of potential energy when fully drawn.

Bows work great to kill deer. They don't work so well against unbelievably heavy armor.

The current in game sniper rifle is, essentially, a miniature rail gun firing flechette rounds.

I'm no one important, but here's the news at 11: NEITHER ARE YOU and either way it's irrelevant.

Dust is not set in Star Wars or Exalted or any number of science fantasy franchises where you can handwave the idiocy of using a crossbow in the far future by saying 'lol it's kitten magic'. New Eden is a sci-fi setting where a freaking space crossbow makes as much sense as Turians running around with mass accelerator longbows or Master Chief using a laser ballista to take out a Covenant cruiser.

And your crossbow suggestion reeks CoD kiddy.

Thet would only actually work on the mass driver, smg and hmg

Any other ammo type would destroy the suppressor and harm the gun