The iconic enemy from the Portal series, the Sentry Turret, is here and in Lego! The turret's signature machine guns are able to retract into the main chassis, to switch between active and standby states.
This model was built to be easily able to fit on a shelf or desk for display due to its small stature. While the size isn't physically impressive, I made this with space limitations and affordability in mind. At a parts count just above 100 pieces, this would be a Lego Ideas set that wouldn't make your wallet cry.
Please let me know of any comments and suggestions!