This is part of my set up for LONG distance.  I wanted to have a more comfortable configuration when sitting on the bench.  Due to having a large amount of elevation correction in my rings and rail and large objective lens I needed to have a higher comb.  The higher comb made for a less natural shoulder resting point on the butt pad.  This print alleviated that discomfort.

PETG - I printed with 6 walls for perimeter, top and bottom. 35% infill. 

My PETG was too shiny so I sanded the outer surfaces and flashed with a torch to get a more matte finish.

I performed a redneck impact test on these by mounting in a vice and beating the heck out of it.  It lasted A WHILE before breaking.  I have had zero issues with material.