I have messed up Am, any suggestions?

[Dr. Zeppers]

I will agree with Edward on what the "best" approach towards grenades specifically.

Just dont want anyone thinking they are stuck if they do veer off the norm.

When I get grenades, the next two days im usually concentrating on getting them to at least lvl20 trying to "git'er done" so to speak. hehe

[MacIronhawk]

Well other people have already posted but here's my advice....
Start getting them even by starting with the lowest level weapon first.
Get that up to the third highest level.

Then....
Well just get all your weapons to the highest level weapons level.
Example: Your highest level weapon is 17...get them all to level 17.