View Full Version : CAI handguard with rail added

05-05-2011, 06:52 AM
I wanted a picatinny rail on my handguard so I could mount a bipod. I wasn't too excited about spending $70 on one of the tri-rail handguards and I liked the slimline one on my CAI.

So... I decided to do something about it.

I purchased a rail kit designed to fit a standard A2 AR handguard. I milled the forearm bottom flat taking off only as much as was needed to have the rail fit flush. I drilled two holes through to fit the screws, and purchased some 1/4in replacement screws. I had to mill the sides of one of the nuts that fit on the back to have it not touch the barrel when fitted. It actually came out more solid and stable than I thought it would. Now to paint it sand color to match the rest of the rifle.

BTW, all of this cost me ~ $20 ($12 for the rail, $8 for the screws from McMaster Carr)

Its not the best setup in the world, but I love to tinker and machine stuff.

End results




I know there are better out there, but this was what I came up with in ~30 minutes.

05-05-2011, 08:59 AM
As long as it's stable you're good to go! Looks great!

05-05-2011, 11:29 AM
Looks like you milled too much out and cracked the handgaurd/forearm? No biggie if you did as the CAI stocks seem to be a dime a dozen.

When I done mine I milled the bottom of the rail to the contours of the hg/fa instead, as parts of it are fairly thin.

05-05-2011, 07:33 PM
No, actually its not a crack. I see what you are talking about, but I think that is just some strange ghostie in the pic. I only milled off the rib and about 2-3 millimeters off of the thickness. This one is pretty thick.

05-09-2011, 05:28 PM
Installed with handguard painted.



Brian O
05-09-2011, 07:59 PM
that's looking good.

05-18-2011, 08:23 PM
Thanks! It is actually really stable. It has no flex to it (to my surprise). I may make a few more just to keep on hand.