get the m324. as long as you dont get rid of the mk96. totally worth it. .30s work good.
I would go with the UTG M14 AEG Electric Sniper Rifle Wood, because it is electric, which means that it has both Semi and Full Auto modes; where the UTG MK96 Shadow Ops Spring Rifle will be Single shot only. The answer would depend on what kind of a game you are wanting to play. The M14 would provide a more open ended platform for play, as you can play in full aeg mode and provide cover fire, and then go to semi mode and do some sniping. If you are wanting to only play as a sniper, you might want to go full out and get a designated sniper rifle and all the kit. Personally I would probably agree with the first poster and go with the m14 simply for a more versatile weapon. Most serious snipers go with a bolt action spring rifle for power and reliability.