You level up your secondary that you want attachments on.
unlock double attachments
You can have both attachments on if you unlock the gun perk that lets you have two. ie, kick, focus, attachments
Every machine pistol and handgun can be akimbo. No SMG's or shotguns can be akimbo in MW3.
What you have to do is level up till you can buy it or find cheats online but i have already cheacked for you could not find any :/
No there is not but you get gun specialties and you can have a range specialties
The guns themselves can gain experience, and the more you use them, the more they get. When they level up, you unlock attachments, proficiencies, and skins for them.
There is only one witch is a regular shot gun attched sort of
most likely mw3 will have guns and attachments that you will unlock from level to level.you probably will not see and point system to buy attatchments for guns
Statistically i believe the MG36. For attachments however, I'd say the grip with an Optical attachment. But really its your own decision
I like the UMP45 with rapid fire and extended mags. I also like the MP7 with the same attachments.
No, you need to rank up your gun level again.
Using MW3 Prestige Rank Hack for free by getting it from the Modern Warfare Prestige Hack site and using it to edit and hack your Prestige Level, Rank and unlock everything from guns, camouflage and attachments. Source http://www.mw3prestigehack.net/
There are ten assault rifles in MW3. These are the M4A1, M16A4, Scar-L, CM901, TYPE 95, G36C, ACR 6.8, MK14, AK-47 and the FAD