I have a YHM Specter Length quad rail currently on a carbine length system. If I transfered this to a mid-length system, will it still cover the gas block?? Does anyone know of a chart that has the measurements showing the lengths of the different gas systems. I am debating on whether to use my Spike Zombie lower to make a distance / precision shooter in a mid-length system. Its either that or sell it for another lower to paint the gun OD and make a distance shooter. Any insight will be appreciated.

I have a YHM Spectre length on a mid set-up and no, it does not cover the block. About a 1/2" is exposed with the block I have.