Gonna put my tuppence worth in here as I hounded Lambda until they agreed to produce the Maximi variant and can attest to the similarities (and differences) to the real UK pattern gun. I am by no means an expert on the voodoo witchcraft that makes AEGs function so I’ll stick to the externals.
Externally there are a few fairly significant departures from the UK spec. Lambda was made aware of a couple of these in pre-production but didn’t address them, I’m guessing because of the cost involved.
I do not mean to detract in any way from the fact that Lambda has brought a unique gun to market