User blog comment:Damac1214/Call of Duty: Black Ops II Multiplayer Reveal coming on August 7th/@comment-5207163-20120804030151/@comment-25496444-20120804125745

I rarely see and use it in CoD4 (because it's a rather weak unreplenishable Tier 1 perk), I've literally never seen someone use the Rifle Grenade in WaW (same as in CoD4), so MW2 is the only one where it's good.