Help with making this two piece part

[Shotgun]

Like this ?

View attachment 471122

I might have gone a bit further and done the left side so that the part has more constraints. If that bottom corner was slid in, even a eighth of an inch, it would not be able to vibrate back and forth. Put a chamfer on it, and a dovetail on the block, and it would be completely constrained.

 

[Archer60x]

Gotcha! makes sense! Thanks for the help! I am learning.

The loads will be very small, but every little bit helps.

Chad