LMG-style AR15 Handguards

prusaprinters

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.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.DirectionsPrint the test model to verify the fit of the dovetail joints. Adjust XY size compensation (aka “horizontal expansion”) as needed.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.Cut four 280mm pieces of 2mm rod for rifle-length, or 204mm pieces for mid-length.Clean up the holes with a 3/32" drill bit, if necessary, to ensure that the rods will fit.Join each front half to the corresponding rear half at the dovetail joint.Apply glue inside the two holes at the rear of each handguard.Insert the rods all the way into the holes.Consider lining the inside of each handguard with a heatshield such as basalt tape, sheet aluminum, or whatever the kids are using these days.Mount the handguards on your rifle in the standard manner.