#How to install free float rail ar15 full#

Install the 8-32's to lock the handguard on to the barrel nut. I then put all the peices together and drill a hole pattern around the barrel nut with the CF tube installed, then tap them. I like this because I have smaller hands and appreciate the smaller diameter. Remove and drill a hole for the tube, or if you use smaller diameter tube, like on the lefty upper below, just cut/file a slot for the tube to ride on top of the nut. Tighten it down and mark where the gas tube will go through. Slip the barrel into the upper and install your new barrel nut. I have never thought to take step by step pics, but I will when I do the next one for an LR308. I also turn a small ring that snaps in the front to protect the front of the carbon tube from chipping, and also to give it a cleaner look. Turn the forward section of your barrel nut to where the carbon tubing is a tight fit. I also like knurling, which I dont have on the two shown. The OD can be done several ways, I prefer a step up for the back of the carbon fiber tube to but against. The ID of the bbl nut matches a mil-spec, or you can use the upper for you measurements. Scrap peice of 2' diameter aluminum bar stock, 3-5' long.įirst I turn a very simple barrel nut out of the aluminum bar stock. 40' Uncut Blank Rifle Picatinny Rail Mount for Handyman or Gunsmith : : Sports & Outdoors from here>įilament Wound Carbon Tubing - Carbon Fiber Filament - Rock West Compositesġ2' x.

#How to install free float rail ar15 full#

The homemade ones end up around $50 with a full length top rail.įilament Wound carbon fiber tube, 1.875' O.D. One of the most benificial parts contrived was the free float handguard, since most similar ones were over $200 if they could be found at all. During the first Obama gun scare, I started making my own AR parts since they were hard to find.