This mod is addon for HK45C pistol (and its required for this mod to work!) that adds akimbo variant. Unlock Level: 25
Weapon will appear as Akimbo HK P30L(Akimbo Contractor) for other players if John Wick Weapon Pack DLC is own otherwise Glock 17(Chimano 88) will be used.
Optional fednet icon addon can be downloaded from this link.

BeardLib is required.
SuperBLT is required.
WeaponLib is required.
Attachment descriptions is required.

Extract archive content to "mod_overrides".
How to Install Custom Maps, Weapons etc (Beardlib + BLT + Mod_overrides) tutorial by Master Indigo

Recommended mods to use with this custom weapon:
Custom attachments for custom weapons - Adds data of custom attachments to this weapon.

Note about uninstalling custom weapons/attachments:
Before removing any custom mods files always sell custom weapons/remove custom attachments from weapons. By not doing so there is chance game will not start anymore due cleanup script didn't managed to remove all not longer existing data and results in crash on save load. To fix that you need install custom mods that was removed and repeat said process.
Alternatively you can use this mod if installing mods back failed:
Custom Weapon Crash Fix by Rokk.