It looks glorious:

Aliens M577 Armored Personnel Carrier Vehicle Replica

Presented for the first time in a large-scale format, this intricately detailed Aliens APC model is in glorious 1:18 scale, measuring a very impressive 20-inches long! Using the original blueprints as reference, no detail has been spared making this the most accurate recreation possible. The Aliens M577 Armored Personnel Carrier (APC) features moveable gun turrets and rotating wheels, and is authentically weathered for added realism. It is complete with a separate Aliens-themed display base, designed to replicate the floor tiles of the Sulaco. This museum quality scale model is constructed from heavyweight polystone and then hand painted to the finest detail, and limited to 1,000 pieces worldwide.

“Polystone” is just a hoity-toity word for “urethane resin mixed with rock dust.” This, sadly, is a more expensive medium than injection molding, as is normally used on car toys & replicas of this size. And thus the going price is $540. Ouch.