gun

how can i do mg36+3 ?

u can't do nothing, +3 guns are from game start, then they removes the legit weapons, added the weapon customization, they gived away that guns for everyone who had buyed a gun, so if u see an m95 +3 or any +3 gun, its from closed beta/ normal beta.....

In Closed Beta, every gun was equal (except M24 and starter guns)

AEK and M16 were good, the veterans and elites even better.
All the SMGS were balanced.
M4 and Scar were "top dogs" with the OP but under used AUG holosight.
MG36 was released and the "OP" was born.

Then came along december 20, 2011. Doomsday.
Every single gun got a nerf, except the MG36, that gun stayed the same if not better. They gave out +3 versions of any gun that was considered "Elite or veteran"

So, if you owned a Veteran AEK-971(Cost roughly $15) you got a +3 version
If you owned a Elites AEK-971(Cost roughly $20) you got a +3 version
If you owned the normal AEK, out of luck bud.
UMP45, MP5, MG36, XM8AR, M4, Scar, AUG etc all have plus 3s.