Will the sights leveling be a problem?

Discussion in 'General Rifle Discussion' started by jon1992d, Jan 14, 2012.

  1. jon1992d

    jon1992d New Member

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    I recently purchased folding iron sights online for my ar-15. The thing im worried about is the rear sight is raised up higher than the front sight becuase of the rail system. When i line the rear with the front i feel like im looking at a target while the barrel is pointing above what im seeing. This is what i have..

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    ForumRunner_20120114_160214.jpg



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    ForumRunner_20120114_160253.jpg

    I think this is designed for the original carry rear sight and triangle front sight but i do not like that concept i would rather have the folding irons. Will the effect my aiming while shooting?
     
  2. Jpyle

    Jpyle New Member

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    You need to get a different front sight. You have a set made for a uniform plane where the front rail extends straight out from the upper receiver. For a lower profile gas block mount you will need to get the appropriate height sight. Also be sure not to mount a polymer sight on the gas block, the heat will warp and distort the base. And yes, it will definitely affect your shooting, you will be consistently high as you will pull the centerline of the bore up to get the sights aligned and there is not enough down adjustment in the front sight to offset that much misalignment. Note the longer base on the pic below...thats what you need.

    [​IMG]
     
    Last edited: Jan 14, 2012

  3. jpattersonnh

    jpattersonnh Active Member

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    You have a few issues going on. Your sights may actually line up on target. But, that bi-pod on the barrel is a bad idea. Your front sight should have an ajustable pin. If you are shooting high, raise it.
     
  4. jon1992d

    jon1992d New Member

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    Why is the bipod bad?
     
  5. jon1992d

    jon1992d New Member

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    How would the heat distort the base tho? It is on a piece that wont heat up around the barrel. Sorry if im confusing but this ar is the biggest money pit and hassle for me. Any help is always apriciated tho.
     
  6. Jpyle

    Jpyle New Member

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    If its all metal there's no problem. Couldn't tell if they were molded plastic or not. I have seen pictures of the handguards on an M16 actually on fire from the heat, 10 or 20 rounds and that entire barrel and any metal parts on it are untouchable from the heat, you will feel it through the hand guards.
     
  7. jon1992d

    jon1992d New Member

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    Oh ok i know what you mean now. If i get the front sight that you posted would i be able to keep my rear sight?
     
  8. JonM

    JonM Moderator

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    thats a magpul mbus front sight and it will melt sitting on that gasblock
     
  9. Snakedriver

    Snakedriver New Member

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    You need to listen to JPyle. Those MBUS sights on the low pro gas block aren't going to work. They'll be too low. It also states on Magpul site that they are NOT for mounting on a gas block like you've done. They are polymer and aren't built for the heat. The front sight JPyle has shown in the picture are the ones you need.
     
    Last edited: Jan 14, 2012
  10. Jpyle

    Jpyle New Member

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    Yes, rear sight is fine as is. The sight pictured is a Yankee Hill I believe, that style or any gas block mount flip up will work.
     
  11. Snakedriver

    Snakedriver New Member

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  12. jon1992d

    jon1992d New Member

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    Ok cool thanks a bunch guys saved me a ruined trip to the range and a few bucks. Why did he say that the bipod was a bad idea thow?
     
  13. Snakedriver

    Snakedriver New Member

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    You'll have to experiment with the bipod on vs. the bipod off to see if the point of impact shifts when the bipod is mounted. The general rule is that anything attached to the barrel will alter the point of impact.
     
  14. trip286

    trip286 New Member

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    Putting a bipod on the barrel just doesn't lend itself to its best potential accuracy. Its better to have it on the handguard or forend. Better accuracy is achieved with a free floating barrel, than one with the weight of the gun resting on the barrel.