Mounting AR front sight

[Jeff Porter]

But all you need to do is tap the hole that is under the sling swivel that was bored to make the gas port. Puts pressure directly opposite the port and seals it well. This M4gery is exactly what you are doing. Pinned originally ( see the holes) tapped and set screwed.

 

[Dusty Stevens]

I need a non “f” marked front sight to use on a carry handle upper if anybody has one

 

[Fast14riot]

I need a non “f” marked front sight to use on a carry handle upper if anybody has one

I might have one in my stash. I still shoot a NMA2 upper.

 

[Fast14riot]

Some of the FSB drilling jigs can be aligned to drill the FSB with existing holes in the barrel. Several manufacturers of them out there. Or, call one of the good AR smiths like CLE, White Oak or Keystone Accuracy.

 

[GenePoole]

Some of the FSB drilling jigs can be aligned to drill the FSB with existing holes in the barrel. Several manufacturers of them out there. Or, call one of the good AR smiths like CLE, White Oak or Keystone Accuracy.

The drilling fixtures are nice if you're doing a bunch, but I have used a home-made fixture that works great. Just an aluminum plate square and true with the barrel extension pin notch. This can be rotated in 90° increments. Once the barrel is squared, I line up the sight post with a 3/8 inch dowel in the sight post hole and quill. Clamp it with a Vise-Grip plier and rotate, drill, ream.