AR-15 Vice Block STURDY!!

thingiverse

Print this at 90% infill, print on its side for maximum strength. Nut and bolt holes included in design to allow crushproof clamping, at lower infill choices. If printed at the 90% no N/B needed as the print is a solid block, and should not crush at all. Either way at any infill desired, this design should last the test of time...