LMG-style AR15 Handguards

prusaprinters

<p>Chunky square handguards, externally fluted to complete the distinctive Colt™ LMG look. Internally ribbed for extra strength. Each is made of two dovetail-jointed, pinned halves. Models are provided for rifle-length and mid-length gas systems.</p><p>These handguards are meant for mounting on an M16-style front sight. This makes them compatible with many AR15-based rifles and carbines, but not with those which have a carbine-length gas system or a handguard-mounted sight.</p><h3>Directions</h3><ol><li>Print the test model to verify the fit of the dovetail joints. Adjust <i>XY size compensation</i> (aka “horizontal expansion”) as needed.</li><li>Print the two halves of the right handguard, and also their mirror images to produce a left handguard. Do it in a high-temperature material, with 100% infill. If your machine can print the right and left handguards in one piece each, then go for it and skip ahead to step 7.</li><li>Cut four 280mm pieces of 2mm rod for rifle-length, or 204mm pieces for mid-length.</li><li>Clean up the holes with a 3/32" drill bit, if necessary, to ensure that the rods will fit.</li><li>Join each front half to the corresponding rear half at the dovetail joint.</li><li>Apply glue inside the two holes at the rear of each handguard.</li><li>Insert the rods all the way into the holes.</li><li>Consider lining the inside of each handguard with a heatshield such as basalt tape, sheet aluminum, or whatever the kids are using these days.</li><li>Mount the handguards on your rifle in the standard manner.</li></ol>