Very technical question

[Seth Harness]

Does anyone know the material hardness of an AR-15 front sight base, in terms of "rockwell"?
Im hopeing its kind of an industry standard for all AR's.

Thanx in advance.

[Ned Christiansen]

"Not particularly hard". Sorry I can't be more technical but I've done a fair amount of machining on a fair number of them and I don't think they're any more than 28Rc.

[Seth Harness]

"Not particularly hard". Sorry I can't be more technical but I've done a fair amount of machining on a fair number of them and I don't think they're any more than 28Rc.

Thanx,
I was going to guess about rockwell 35 or so. I want to drop a weld over my gas tube roll pin holes and re-drill them. I want to weld it with stainless for some extra strength as Im going to use a homemade solid pin instead of a roll pin.
BTW- This project is for the application of my ares piston kit because Im tired of replacing roll pins.

[DuGaul]

What is the proper diameter for a solid pin to replace the roll pin?

[ARin]

Jeez seth. seems like that Ares kit sure gives you a lot of grief.

why not sell the kit, and start over with something different?
PWS maybe?

[Seth Harness]

Jeez seth. seems like that Ares kit sure gives you a lot of grief.

why not sell the kit, and start over with something different?
PWS maybe?

...

I guess I dont see it as grief, I see it as something to do in a field that I absolutly love.

Man... This thread was dug out of the archives. I forgot about it

[Abraxas]

How did it turn out?

[DuGaul]

Seth,

A. What is the dia for a solid roll pin?

B. Is is possible that the lack of the end cap caused your roll pin problem?

C. Would using the end cap as a spring help/solve the roll pin problem?

[Robb Jensen]

What is the proper diameter for a solid pin to replace the roll pin?

I used a 4-40 set screw to hold the gas tube into the gas block. I tapped the spigot and the gas block (made from the FSB) and installed the set screw with Rocksett. It's holding up well.

[Seth Harness]

I used a 4-40 set screw to hold the gas tube into the gas block. I tapped the spigot and the gas block (made from the FSB) and installed the set screw with Rocksett. It's holding up well.

Thanks gotm4 Im glad you chimed in to give some good info as I went a little different route.