well you would have it upside down since you need to pull up to load.
<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=821563"/>
<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=821564"/>
Look at guns where Triggers insert Like this
<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=821560"/>
& yes I agree on The Button looking like it is to Mimic a Thompson
<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=821565"/>
l'm Going to guess 1960's only because the Pull to load Button seems Very Familiar,
Like I may have had one as a kid.
Either that or I was Clyde in my last life