I was not clear earlier.
I have worked with 10+ DSA scope mounts, only currently produced FAL mount worthwhile that I have seen.
I have not seen the ARMS so no opinion, most of their gear I have used is good.
I am not sure of the provenance of the mount that i believe is South African.
DSA also make a mount for the Para FAL, equally as good.
When mounting make sure inside plates are in upper receiver grooves properly and seated flush. Tighten gradually and evenly while looking at this. Seems obvious but I have seen this not done right, resulting in mount not being tight, not keeping 0 and damage to inside plates.