I was looking hard at an MPA BA Lite. There are two reasons I didn't pull the trigger;

1) proprietary connectors with a refusal to move to m-lok

2) known issues with their side folding adapter not locking up tight, although they did recently redesign this in order to correct this issue (the jury is still out on the new adapter)

I ended up with a carbon fiber McMillan A3-5 instead. If MPA were to offer Mlok I would take another look at it. I also have interest in JP's new chassis.