Thanks to 2468wheels for the link!
Thanks to our bud 2468Wheels we go a bit more information on that turret we saw on that modded LAV at Modern Day Marine.
So what's the deal? Well its built by an outfit I never heard of called Moog Space and Defense Group (website here). The setup they've come up with impresses. They're claiming that its modular and can be reconfigured in under 30 minutes. Long story short? I like it. Below are PDF conversions of their product brochure.