I see what you mean, but the shape looks a little different to me, more conducive to pulling straight back. It looks concave on the forward face of the lump like it would fit one's finger when pulling straight back.

I also don't see where the lever wraps around to the side, but maybe the angle is wrong. I do see the possibility of the side lever through the trigger guard between the triggers. So....

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BrentD, (Professor - just for Stan)
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[Linked Image from i.imgur.com]