This is going to be a bit long winded so give me some time to write it. I'll add it to my external gas rig thread. (I need to rename that)
Long post short. Macro line, micro line, and Micro bore, are all different. Macro line is stronger more robust and has a large airflow then the micro, not super flexible.
Micro line is pretty soft and flexible. (IE the hose that connects to the mancraft bolt is micro line) Only rated for 70PSI, though has been known to take more. Not good for parts that moves a lot as it is easily damaged. (great for making fill valve orings and soft numbs.)
Microbore (like the picture) are slim versions of the thick hoses. I do not know too much about the offering that Ninja Paintball has released, but from what they claim it will handle 4500 psi. From the ones I have used, (not the ninja) in the past they have all been colossal waists of money.
Super fragile. The hoses blew out easily and would break easily. Flow rate was a joke and needed to be run on low pressure (less than 400 psi). Then again, for a bolt action may not be so bad. (flow rate)
You can protect the microbore by running it in a sewn on routing sleeve by sewing it to the sleeve of your shirt or ghillie top. This would prevent snagging and what not.
If you want to try the Ninja microbore, go for it, but just be warned that it has the possibility to go south rather quick.
If you buy a coiled remote, make sure you buy a remote cover for it. Helps with snagging and protects the hose from UV damage and sharp bits.
Totally off topic but if you have an HPA tank, there is no freakin reason it should not have a protective tank cover on it. just sayin.