Depends On how much you want to spend, The echo1's/cyma/matrix M14's are the cheapest ones i would go with, While still remaining reliable.
any cheaper brand would just be a waiste of money and break, Or just shoot like crap.
so a cyma m14, or somthing more expensive.
anything like KART, AGM, or Firepower are Crap when it comes to making it shoot like a sniper rifle.
