AR15 Tri Rail Handguard

thingiverse

I'm constantly tweaking updates to make it fit perfectly now. It's still not quite right... I'll let you guys know as soon as I successfully get it to slide into place smoothly. Latest Update: 2/25/18 I couldn't find a stl online, so I created one myself. This was modeled to match the exact dimensions of the one that came with my AR Stoner AR15 upper receiver. It should be standard for all 6.75" handrails. I designed this to feature three rails so you can have a foregrip on the bottom, plus two more attachments of your choice without obstructing your view. Print the top piece with a concave shape pointing upwards to minimize support structures needed and reduce printing time. The bottom one's rail will look better if printed with a concave shape downwards. For obvious reasons, don't print with PLA. I'm personally printing mine with PETG. Polycarbonate, ABS, and NylonX are all good alternatives.