drive screws

[Wrangler]

Just got some 8s and they measure favorably in diameter to the rivets in the Tapco kit. Heads look about right too.

[Wrangler]

I just drilled a 9/64 hole into 1/8 piece of hard steel and drove a 1/8x 3/8 u tyoe drive screw into it to test the holdign power. It will never come out that I can see. I will use the 1/8 X1/4 to build for real. Wow! what a hold it has on that steel.

[d.hauser]

lol wrangler, i did the same as you did. theses should work great.

[Wrangler]

I am sorry to say that after some further experimenting I have decided not to use the drive screws to build with. I am not so sure they will hold as well as I first thought. My original motive was the same as most, tryingto avoid the barrel pin problem. I solved it in a way by simply drilling it out and replacing it. It is much easier and I stll have the good feeling of strength that mashing those rivets gives me.

[killerone]

http://www.ar15.com/content/page.html?id=187
here is the tutorial I did on udrives

[Wrangler]

I like the pictures you made. You did a great job. How many have you done this way now? No problems with them backing out?

[Quarterbore]

Not yet but I hope to soon... I have to work this weekend but I have some of these screws to try... As long as the fit is tight I am confident they should hold.

Now, I will be pulling my barrel as one hole drilled too deep and messing up a barrel is too many... and I have never done that yet! It takes 2-minutes to pull a barrel so why risk it.

[killerone]

three so far , working on a polish onyx right now that I plan to fire a 75 round drum out of this kill all the naysaing