New Custom weapon and Weapon mods

Hi, its posible to make a grip for allmost assault rifle and the Grenada Launcher M203 for more assault rifle.
And if is posible to make the Ares Shrike, multy task weapons, works in LMG mod and AR mod, have a grenade launcher for both!
Battlefield 4 and Ghost Recon Advanced Warfighter 2 have this weapon.
http://www.imfdb.org/wiki/Ares_Shrike
http://www.imfdb.org/wiki/Battlefield_4#Ares-16_MCR
http://www.imfdb.org/wiki/Ghost_Recon_Advanced_Warfighter_2#Ares_Shrike
this is the info about the weapon and the mods.
http://modernfirearms.net/machine/usa/ares-shrike-e.html
Thks for all.
Replies
Ok, but i know you can do it from Battlefield 4, and the weapon can use the Lil friend animation if have the GL, but if you only do the lmg can use a Car animation.... just saying i dont now how work the weapons ports...