I don’t know if if there’s a thread bout this yet, if so, then sorry! Well, here I go. NOTE: I’m only listing guns we haven’t seen in a while/that may not come back.
1.Mauler
2.Plasma Rifle/ Brute Plama Rifle(For the lolz and memories)
3.Plasma Repeater
4.Plasma launcher
5.SMG
6.SAW
7.Grenade Launcher
8.Sticky Detonator
9.Brute Shot
10.Spiker
Needle Rifle and Spiker
CE Plasma pistol.
No EMP, the charged bolt sticks to you doing damage.
Better for commendation kills and wont cause problems if it’s in load outs.
Then bring back the Grenade launcher and use that as the only EMP weapon.
Needle rifle and Spike grenades.
Needle Rifle: Such an awesome weapon. Loved getting explosions with it.
Silenced SMG/Pistol: I’d like to see it back if they implement stealth gameplay (which they should!). Should be pretty good for covert CQC wetwork.
> Needle Rifle: Such an awesome weapon. Loved getting explosions with it.
>
> Silenced SMG/Pistol: I’d like to see it back if they implement stealth gameplay (which they should!). Should be pretty good for covert CQC wetwork.
That was the one thing I hated about the silenced guns. They didn’t add any stealth and the enemy always knew where the shot came from.
Other than that though, they were cool.
If the normal SMGs come back, I’ll be happy.
I wouldn’t even mind if they replaced ARs. 
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Duel wielded SMG’s, though I understand the balancing reasons why they won’t.
Grenade launcher is my favorite gun bar none. Does shield disruptor count as a weapon?
> Plasma rifles. They are one of Halo’s classic weapons, they should never have left.
Storm rifle was so much more… usable.
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Assuming all the weapons from Halo 4 return in Halo 5, then I would like for these weapons from the other Halo games to return:
The grenade launcher should make its return.
> If the normal SMGs come back, I’ll be happy.
>
> <mark>I wouldn’t even mind if they replaced ARs. :P</mark>
Don’t even think about it, Marine! The MA5 series is a fine lot of weapons.