What weapons can be silenced and when do they unlock?

I'm playing Far Cry 4 on PC, and I like to go for a silent approach whenever possible. I already got the Recurve Bow as one weapon, and crafted up to level 3 holster.

The problem is that 10 arrows really is not that much. I'd also like to have a silenced sidearm. I understand that there are also silenced sniper rifles, and maybe other silenceable guns.

Which weapons can be silenced, and when do they unlock?

DLC Exclusives

• Harpoon gun is exclusive to the Hurk's Redemption DLC.

Signature Weapons

• Bushman - Available after reaching the rank 10 of the Shanath Arena
• HS77 - Available after completing 2 Hunting: Control quests
• Predator - Available after completing 4 armed escort quests.
• Stinger - Available after destroying 2 Pagan's Wrath convoys.
• Shredder - Available after reaching Karma level 6.
• Trooper - Available after collecting 20 masks of Yalung.
• Warrior - Available after hijacking 2 Royal cargo trucks.

I discovered almost by accident that one of the earliest unlockable weapons that supports a silencer is the one you get as a redemption reward from Uplay, the A.J.M. 9 which has references to Far Cry Blood Dragon and Robocop.

While creating this question, I went on another search and I found http://www.supercheats.com/far-cry-4/walkthrough/weapons-catalog.

the list of suppressable weapons is:

• F1 (14 towers);
• MS16 (10 towers);
• 6P9 (story reward);
• A99 (story reward);
• A.J.M. 9 (30 Uplay points);
• M-700 (7 towers);
• SA-50 (story reward);
• Z93 (Story reward);
• BZ19 (Story reward);
• MP5 (12 towers);
• Vector .45 ACP (story reward);

In addition, the weapons from hd's answer also can be silenced.