Does this look Normal? Troy Sights

[gatdammit]

So I was trying to sight in my Troy BUIS. I was at the range and shooting my Rifle and it seemed I was hitting targets at 100 yards about 12" high... so I gotta bring up my front sight post right? At 1/2 MOA per click, I have to bring up the post about 24 clicks? I actually didn't have time to finish zeroing and try it out when the range closed.

Yes I'm a noob at this, but I figured I'd take the target home and at least adjust the front sight to get it close for the next time I get to the range.

So after adjusting the Troy front sight it looks like this after 20 clicks:
Does this look too high?? IS this right?



BTW here's a pic of my rifle...



And here's a pic up close of the sight radius:
I guess it's about 17.5" . WIll that affect the MOA adjustment on the clicks?

[BigAL]

I don't have experience with the Troy front BUIS as I run fixed front sights on all my ARs, but I do run the Troy rear BUIS. They are solid sights as far as flip ups go. You used the small rear aperture to sight in right? 24 clicks sure seems like a lot to me - I've never had to make that much of an adjustment on my carbine length, midlength, or rifle length gas systems. Maybe has something to do with the height over bore of the rail combined with the sight? Might want to contact Troy and or Vltor if you can't find your answer.

[Swiss]

I had Troys on my AR and IIRC my front sight post was pretty much flush with the base (certainly not as high as yours). My sight radius is about 16".

Nice looking rifle - I hope you figure out why that post is so high.

[SLYoteBoy]

You used the small rear aperture to sight in right?

Dont mean to threadjack , is this standard practice?. I sighted in 1 inch high at 25 with the ghost ring aperture. And im shooting over the targets at 100+ yards. Is this why.

[gatdammit]

^ I think that might be why... I think the bullet first cross the line of sight at 25 yards(meters?) on the upward trajectory and then will cross it again at 300 yards (Meters?) on its way down... so anything in between those two points will be above point of impact? Again, I'm a total newb. I'm planning on running optics, but would like these irons squared away... anyone else have any ideas? Thanks

ALso, getting back to my issue... I guess I can move the sight back more on the rail... that way it will 'raise' it since it's closer, but I'd be losing sight radius...yes or no? Or does that even matter?

[gatdammit]

What other info do I need to give about the rifle or the sights or specs?

[BigAL]

Dont mean to threadjack , is this standard practice?. I sighted in 1 inch high at 25 with the ghost ring aperture. And im shooting over the targets at 100+ yards. Is this why.

For sighting in an AR I recommend doing it at 50 yards. The bullet will do an initial cross over at 50 yards going up and cross over again going down at 200 yards. It will be within ~2 inches high in between those 2 distances. So you should not be shooting over the target or something is wrong. I asked about the small aperture just because it is more precise than the large one.

[high_revs]

here's why.. looks like you have the same problem i had.

http://www.calguns.net/calgunforum/showthread.php?t=187757&highlight=sight

I hand to look at it again and your 3rd pic showed it. I decided to buy a midwest industries folding front, or you can just mount your front sight on your rail (it'll be odd though since your gas block will protrude with some rail on it). I also bought the set instead of mixing/matching (bought the midwest folding rear too, the more expensive one unfortunately but it's lower when folded).

[Barney Gumble]

here's why.. looks like you have the same problem i had.

http://www.calguns.net/calgunforum/showthread.php?t=187757&highlight=sight

I hand to look at it again and your 3rd pic showed it. I decided to buy a midwest industries folding front, or you can just mount your front sight on your rail (it'll be odd though since your gas block will protrude with some rail on it). I also bought the set instead of mixing/matching (bought the midwest folding rear too, the more expensive one unfortunately but it's lower when folded).

Um...no. Not the same problem. You had your sight mounted on your gas block. His is mounted on the rail.

OP, if you sighted in at 25 yards you'd be pretty high at 100. Should be more like 6" though. As someone else suggested, you should sight in at 50. That will put you 1.5" high at 100 yards and dead on again at 200. Here are the trajectories for 25, 50 and 100 yard zeros for comparison:

[high_revs]

Um...no. Not the same problem. You had your sight mounted on your gas block. His is mounted on the rail.

look at picture #3 and even #2. tell me that mount point/base of the front site is actually on the rail. what he says and what the pictures show are 2 different things.

or maybe that's not a gas block in front but something else. but the front sight is not on the rail protruding from the rear. tehre seems to be something else in front where the sight mounts (i'm thinking gas block but pic 3 show possibly the low profile gas block a few inches behind it).

[high_revs]

What other info do I need to give about the rifle or the sights or specs?

how about a close up photo of where you mounted the front site? how about one w/o the front sight mounted also. i've not seen a rail where the front part dips/goes lower and is not on the same plane as the rail where the rear is on. strange.

[Barney Gumble]

He's using a low-profile gas block. You can see it clearly in pic 3.

how about a close up photo of where you mounted the front site? how about one w/o the front sight mounted also. i've not seen a rail where the front part dips/goes lower and is not on the same plane as the rail where the rear is on. strange.

That's just the base of the sight clamping onto the rail.

Like this:

[high_revs]

Gotcha Barney. Ya got me. I pulled my N4 upper and it's the same. Either the camera angle got me, but it seemed much lower to me than what thought my troy;'s on rails were. You're absolutely right! (man enough here to say I'm way off base and wrong. )

[gatdammit]

Thank for the reply guys... And I will try to sight in at 50 yards, but I'm thinking I'll still need to post to be pretty high. possibly 3 clicks lower. Should I just move the sight back on the rail? Like 1.5" back for a 16" sight radius? I mean it would raise the post without raising the post do you know what I mean? I don't understand why I'm shooting almost a foot high at 100 yards... could it be something else?

If it can be resolved, I would like it so that the Troy's will sit on the end of the front rail... but if I have to move it back, it may look funny.

[f4ipowered]

Troy Sights

Did you install this free float tube yourself or purchase the upper as a whole?

I have a similar setup with both the Troy flip up sights, as well as a longish free float tube that extends my sight radius, and I did not have to do this at all. It seems like something isnt right, in the installation of the sights or maybe the barrel/rail relationship. I ask because I installed my free float and had some difficulty getting it just right. My trouble was different than yours, but did teach me the importance of getting the free float rail on correctly, maybe you purchased it like this and that isnt the issue.

If you measure with a ruler, or better yet a micrometer from the top plane of the rail to the center of the apeture in the rear, and then measure again from the top plane of the rail in the front to the top of the post, are those measurments pretty close?

I dont know what is going on, but I agree something isnt right.