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Thread: which would be the easiest?

  1. #1
    Boolit Master
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    which would be the easiest?

    The problem: The scope on my AR15 is so high i have little or no cheek contact with the but stock. The reason it is this way is the factory front sight is so high and i can't through it. It is one of those A frame sights 3-4" high that is also the gas block.
    I know have a 1" high 4.5" long riser (totally UUUgly) that just bairly holds the scope high enough to use. But i can still see the ghost of the front sight in the bottom of the scope. I have looked at other devicess to raise the scope. But i haven't found one high enough.
    How hard would it be to take the front sight off (which i more than likely not ever use) And replace it with a shorter gas block?
    After i post this i am going to the AR site. And trying to find some information on the subject. Kevin

  2. #2
    Boolit Master RU shooter's Avatar
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    Do you have the standard handguards on it or a float tube? If standard handguards the easiest thing would to just cut off the tower portion of the sight frame file smooth and apply some cold blue . You don't even need to take it off the barrel to do that . If the rifle has free floating hand guards you can do the same thing or tap out the two cross pins and just tap off the sight tower and install any low profile gas block that installs with set screws.
    Here's a pic of a shaved ft sight base https://goo.gl/images/zQr5ei
    Last edited by RU shooter; 05-16-2018 at 09:32 AM.
    If you find yourself in a fair fight, your tactics suck!

  3. #3
    Boolit Master
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    RU That was my first thought. Then i got to thinking of how Bubba has messed up other firearms.
    My handgaurd is just the standard (cheep) first time buyer package.

  4. #4
    I too have solved this problem with a hack saw and a file. I just whacked the front sight off the gas block, cleaned it up with a file, blasted it and reparked it. Not the most elegant solution but on a parts kit, yote stomper truck gun it worked well. You could always buy an extra and chop it up so you have the option to throw the original back on.

  5. #5
    Boolit Master RU shooter's Avatar
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    Quote Originally Posted by kbstenberg View Post
    RU That was my first thought. Then i got to thinking of how Bubba has messed up other firearms.
    My handgaurd is just the standard (cheep) first time buyer package.
    Haha I hear ya. But ya know what it's an AR it's supposed to be ugly and bubba'ed up .... honestly though it's a simple job and not hard to do properly so it don't look bad hasksaw and a file about all you need .
    If you find yourself in a fair fight, your tactics suck!

  6. #6
    Boolit Man RGrosz's Avatar
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    Was running into the same problem. Thought about taking a hacksaw and file to it. Then at a gunshow, bought another upper and swapped it out. Will try to take RU's solution on the backup upper or just leave it alown and use it with the open sights. Didn't think I needed an AR15, just bought it to PO the libs. Used one for years in the USAR, now it's growing n me.
    Rob
    Know there is a difference between a M16A2 and a AR 15, but they handle the same, since I put a A2 buttstock on mine

  7. #7
    Boolit Master
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    Your best bet (IMHO) would be to get a new Picatinny (flat) gas block for the front. This would be negated if you don't have a removable carrier handle, in that case just lop that sucker off like the others have said...you can always get another if you sell it.
    Domari Nolo

  8. #8
    Boolit Master Texas by God's Avatar
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    Fellow lopper and filer here.
    Most folks don't notice it unless I point it out.

    Sent from my SAMSUNG-SM-G930A using Tapatalk

  9. #9
    Boolit Master
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    Put the scope where you want it, dial up the magnification, and you'll never see it. At least that's been my experience.

    At 2x I can see it, but at 7x I can not.

  10. #10
    Boolit Man
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    Here's an idea
    How bout you swap it for a barreled upper without the sight tower and not bubba another perfectly fine barrel. Not hatin just stating.

  11. #11
    Boolit Master Mauser 98K's Avatar
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    apparently ya have never looked at some custom target rifles. a lot of them have a riser on the stock to achieve a cheek weld when the scope would normally be too high. i did this standard on both of my rifles i built so that the stock is locked to my cheek and is repeatable.
    Click image for larger version. 

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    but yes they do look odd, but you make a trade off when you go for accuracy. the problem with sawing off the sights is that once you do it you can't go back to the iron sights if something was to happen to the scope. that is why the risers i got on my rifles just plug on the stock and a canvas sheath laces up over it to hold it in place and hide it. if something was to happen to the scope i can just take the riser off and put my iron sights on and go with it. but a little ghost is not a problem unless it obstructs the sight picture to where it makes aiming impossible. ideally you want the scope as low as you can get it and still be able to see to aim as the higher the scope the more error you can get if the rifle is canted even the smallest amount. it also makes shooting shorter ranges a PITA as the closer you get the lower the POI becomes. but i have shot rifles with suppressors on them that the scope was low enough that the suppressor showed up in the lower portion of the scope. it didn't interfere with the aiming at all so wasn't a problem. but as long as it does not interfere with the target acquisition and the aiming then i would not worry too much about the front sight showing up a little in the bottom of the scope.

  12. #12
    Boolit Master Bazoo's Avatar
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    If you think you might ever want to use the front sight again, then remove it and replace it with a low pro gas block.

    You can later on replace the front sight tower/gas block assembly and it'll be just as solid as it was. It has tapered pins that will need to be driven, if I recall correctly, from the left, to the right. They should be larger on one side than the other. Some ar's did come with just straight pins, but it aint spec that way. Each sight tower is put on the barrels, and then the pin holes are drilled. So, each tower/barrel will have different spacing of the holes, thus a used sight normally wont work on the barrel without re-reaming one hole, installing an over sized pin, and then doing the other hole.

    There are bunches of options for replacement gas blocks, both with folding sights, and with no sights and with rails.

    here is the set screw variety
    https://www.brownells.com/rifle-part...prod26993.aspx

    Here is an example of a clamp on option.

    https://www.brownells.com/rifle-part...prod26994.aspx

  13. #13
    Boolit Man pincherpartner's Avatar
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    Have you considered a delta style cheek piece to raise your head a bit?

  14. #14
    Boolit Master wrench man's Avatar
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    Quote Originally Posted by Speedo66 View Post
    Put the scope where you want it, dial up the magnification, and you'll never see it. At least that's been my experience.

    At 2x I can see it, but at 7x I can not.
    This, a about 3 power they seem to disappear, 4 power for sure.
    ASE master certified engine machinist
    Brake & Alignment specialist, ricer to class 8

  15. #15
    Boolit Master Texas by God's Avatar
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    When they invented the removable carry handle they should have done the same for the front sight tower IMHO.

    Sent from my SAMSUNG-SM-G930A using Tapatalk

  16. #16
    Boolit Master Bazoo's Avatar
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    I like the standard A2 rifle sighs myself.

  17. #17
    Boolit Master
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    There are a multiple options that will work that have been mentioned above that I second or third.
    Lower the scope and ignore the Little fuzzy spot.
    Or put a cheap micro gas block on, they can be found for minimal $.
    "Don't worry what they think. In the end it is not between them and you, it is between you and God."

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check