Quote:
Originally Posted by sheepherder
- It's made by Mauser...Why doesn't it have the 'Mauser hump'??? I know it's 1970's production...Did Mauser decide that it wasn't worth the effort???
In any event, I like it! 
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Rich, I believe the answer to your question is that Mauser started production of the 1970 Interarms Mausers using equipment they bought from the Swiss.
The Swiss never leave any suspect engineering to chance and had tweaked the manufacture of their own Luger frames to eliminate unnecessary production costs by extending the full back of the frame ears to the distance that the Mauser bump had been engineered to ensure that the toggle pin never slid out while in service.
They also left the trigger lever "bump" on the sideplate as full length, instead of trimming it back to German standards for the same cost reduction reasons.