Everything is either beveled or smoothed.

Beveled == unsmoothed just edge bevels. The entire stock, handle, section with the ribs on top of the bottom stock are all unsmoothed and just edge beveled.

Did something in particular seem to sharp to you?

To me it's a function of how close you intend to get to the object and what the object is and how it would be manufactured IRL. Blocky metal parts and medium to long shots look very good with just edge bevels.

Edge bevels save poly count but on tight shots you can see faceting and cg looking razor sharp edges.