AR-15 Vice Block

thingiverse

Based on Frank Bright's design (ya3dpc), I modified the magwell with a notch to prevent the bolt catch from rubbing against it. I also added an angled support to ensure the entire magwell rests evenly, rather than just the back. As a non-professional designer using Tinkercad, I'm aware that it tends to square off corners, which is why you can see where I made adjustments to the original design. To print this model, simply lay it on its back and you'll only need supports if you want the cutout for the bolt catch to be particularly well-defined.