Hello all, I'm looking for an AK in the ~$200 range, an AEG, and I have a few questions. I'm looking at the G&P AK001, the CM048, and CM050. Anyone have any opinions on external durability, internals, and overall? I plan on building it for high ROF and I was eyeing the 8mm bearings on the G&P gearbox for durability.. opinions on G&P gearbox vs CMYA? Thanks in advance!