Purchased for a TM SR-16 with a Hurricane metal body. First off the factory marui gear box fit perfectly in the metal body. All the holes lined up and it dropped right in. When i installed the classic army box i found it out of spec, and difficult to fit. If i had to do it again i would rather just get a factory marui shell. You definitely get what you pay for.
out of spec
didnt fit without extensive modification
required internal and external filing.
Rating: [2 of 5 Stars!]