Anyone have their rear sights on their AR adjusted far in one direction or the other?

[AliasNeo07]

It depends on the use of the weapon.

Using Set Screws or Clamping Screws means a decent hit against something or drop/fall will kill your zero, and possibly make the gun a single shot. Rapid Fire can cause Set Screws, or Clamping Screws to break loose.

I thought spikes pinned all of theirs...but i'll go take it out and look in a bit. I hope it's pinned. I know my BCM is.

 

[clandestine]

I thought spikes pinned all of theirs...but i'll go take it out and look in a bit. I hope it's pinned. I know my BCM is.

Its pinned unless someone did something after it was made.

 

[knownalien]

It depends on the use of the weapon.

Using Set Screws or Clamping Screws means a decent hit against something or drop/fall will kill your zero, and possibly make the gun a single shot. Rapid Fire can cause Set Screws, or Clamping Screws to break loose.

that's why I had flats milled into the barrel. the Front sight will snap off before it moves.

 

[clandestine]

that's why I had flats milled into the barrel. the Front sight will snap off before it moves.

No, flats help mimimize unintended movement, but it will still move with a solid hit. I did it to a customer FSB who claimed it would certainly NOT move if hit.

One moderate hit with a rubber mallet knocked it 20 degrees off center. He decided to have it cross drilled by ADCO after that.

 

[knownalien]

eh, i'm confident with my flats . . which adco also milled.

 

[clandestine]

eh, i'm confident with my flats . . which adco also milled.

Ok, find out on your own. ADCO did the flats on the Set Screwed FSB I moved with one hit.

 

[dist1646]

Locktite 290. Once you have the FSB in the correct location, just a drop or two of Locktite will hold it in place. I had one AR that the FSB was held in place only by locktite, someone knocked it off the rifle rack and it landed on the FSB. It didn't move even a click. The penetrating locktite is good stuff.

 

[BradMacc82]

Completely normal, I have diamondhead flip-ups - I have to adjust my rear sight aperture to the right some, but I'm a evil lefty on rifles...