This is a 1/2 scale model made by American Miniature Arms, Inc. Moving bolt when you pull the handle. Removable magazine with functional mag release.
And the trigger even works when the model is "cocked". The receiver is aluminum alloy as are the internal works and magazine! Some of the smaller parts, including the interior parts, are machined steel.
The left side of the magazine well marked AMERICAN MINIATURE ARMS, INC. The right side of the magazine well marked with "AMA" in an oval. Metal barrel with polymer furniture just like the real thing. Tiny Stamped trades really complete this model. Great piece for your desk or collection!