Hi there,
After years with GBBRs I have decided to build myself a lightweight AEG. The base is a G2 gearbox from a used G&G SR15, which will get new polymer receiver, buffer tube, carbon fibre barrel and handguard. This is where I find myself stuck on the build. I haven't found enough info that can steer me into a choice of barrel length nor cylinder. Well, neither spring strength as that is a part of the mix.
I would like to have a replica that is built around the 0.28 bb. What is your experience - what would be the ideal barrel length / diameter and cylinder + spring strength to proppel the 0.28? (350 FPS full auto or just under 420 FPS Semi doesn't really matter)
Also,
How compatible is the G2 gearbox with older G&G polymer / nylon receivers? Or even Cyma receivers?
Thanks in advance!