Can a laptop get latency down to say 6ms for use with a drum kit?  I'm talking about whatever soundcards come standard on them.  Is there anything I should look for when shopping for a laptop to achieve the lowest latency possible?  ASIO or WDM or WASPI...whatever will do the job.  Looking for a cheap one...or the cheapest possible.  Thanks folks.

For rock-solid performance at lowest possible latency, you'll want to use a dedicated audio interface that has an ASIO driver. 
 
If you get a laptop with Thunderbolt-3, you can achieve PCIe level performance (sub 3ms total round-trip latency).
The only down-side is cost...  
 
Otherwise, the laptop just needs to be able to sustain the load (glitch-free).