I found HQ to be the easiest gametype to get throwbacks in. Continue to capture the HQ's and you will constantly be bombarded with them. Most of the time of course people use semtex but you will find frags tossed in there as well.
Definitely was the hardest pro challenge to get imo just because frags don't get used nearly as much as semtex. Once you get it though it feels awesome.
demolition, stand by the bomb if your a defender.
Also use frags yourself, throw them at nearby enemys un-cooked so they panic an throw it straight back to which you can pick it back up again. I got a few this way and they count. better with warlord pro.
Btw, you only have to pick up the frag you dont have to actually manage to throw it back.
Sly McFunk wrote:
Either camp out in the tower on firing range or play demolition.
I did it the firing range way in TDM and it took me like 3 matches.
ive got the best suggestion....if u see a enemy, throw the grenade at a wall then quickly throw it at him...simple