I believe scar-H is better because it does more damge but the ACR has less recoil overall i think scar is better
scar is better because it has better accuracy and damage and rate
The SCAR is stronger than the ACR.
guns on call of duty modern warfare 2 are M4A1, ACR, FAL, SCAR-H,TAR-21,AK47, MP5K,UMP45,P90,MINI UZI, INTERVENTION.WA200,RPD, AND MANY MORE
the easiest weapons to master are the scar-h, acr, tar-21,famas, vector, m4a1,and the ak47
You have to get all of the attachments on the ACR to get the mastery.
Not that I'm aware of =/ I hope it does though. there is no acr but there is an automatic famas.
AK-47, ACR, MI6A4, Interventionz, Barret50., Scar-H, (Perks: Marathon,Cold-Blooded) many more :)
The assualt rifle Acr is unlocked at level 48.
Level 48
well many people go for either the m16a4, acr, or scar for their accuracy, but in my opinion acr would be the best with stopping power equipped. it depends on personal choice though, try them all and see what suits your style!
Fully Automatic
Here is a full list of all the assault rifles in the Call of Duty series: Call of Duty 1, 2 and 3: MP44 Call of Duty 4: M16A4 M4A1 AK47 G36C M14 MP44 G3 Call of Duty: World at War: STG-44 Call of Duty: Modern Warfare 2: M4A1 FAMAS SCAR-H TAR-21 FAL M16A4 ACR F2000 AK-47 Call of Duty: Black Ops: M16 Enfield M14 Famas Galil AUG FN FAL AK47 Commando G11 STG-44 Call of Duty: Modern Warfare 3: M4A1 M16A4 SCAR-L Type 95 MK14 AK-47 ACR 6.8 G36C CM901 FAD Call of Duty: Black Ops 2 (This list may not be 100% accurate as Black Ops 2 is not released until November): AK-47 AN-94 Type 95 M16 Galil Type 25 XM8 M4A1 M8A1 Commando