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Get the latest facts on the new NY SAFE gun laws that effect you!

Removal of Front Sight on Bushmaster AR-15


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13 replies to this topic

#1 rabbithunter21

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Posted October 11 2011 - 09:48 AM

I purchased the Nikon M-223 1-4x20 scope and the M-223 mount and I know I have to remove the carry handle and I think the front sight.

If I definitely have to remove the front sight, does anyone have a video or a step-by-step they can suggest that would help me with that?

Thank you!!!
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#2 vmtcmt

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Posted October 11 2011 - 10:11 AM

Are you sure you have to remove the front sight? You may have an issue. If it is a standard AR front sight, it contains the gas block, which is needed for it to operate. If you have a NY legal pinned and/or welded muzzle brake, it would have to be removed and the front sight would have to be replaced by a low profile gas block. It may be easier to replace the barrel.

Anyway, to remove the front sight, the muzzle brake has to be removed, then the taper pins have to be driven out, then the front sight can be removed from the muzzle end. There are many vids on you tube that show how to assemble an upper, including the front sight.


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#3 rabbithunter21

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Posted October 11 2011 - 10:36 AM

vmtcmt said:

Are you sure you have to remove the front sight? You may have an issue. If it is a standard AR front sight, it contains the gas block, which is needed for it to operate. If you have a NY legal pinned and/or welded muzzle brake, it would have to be removed and the front sight would have to be replaced by a low profile gas block. It may be easier to replace the barrel.

Anyway, to remove the front sight, the muzzle brake has to be removed, then the taper pins have to be driven out, then the front sight can be removed from the muzzle end. There are many vids on you tube that show how to assemble an upper, including the front sight.



Do you think there is a possibilty that I wont have to remove the front sight at all?
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#4 vmtcmt

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Posted October 11 2011 - 10:58 AM

It is possible, but it depends on the type of mount you choose, and how comfortable you are with how high it is.

There are scope mounts that go on top of the carry handle, but it may be too high to get a usable cheek weld.

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#5 PGNHAWK

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Posted October 11 2011 - 11:01 AM

You may view the front sight in your scope "window" - depending on where this falls in the scope window, you can leave it or remove it.
I removed mine and replaced it with a low-profile gas block, but it was fairly simple because I had a mid weight barrel with a crowned front end, no muzzle brake / flash hider to mess with.
If you have to remove the front sight, you can always just dremel off the top "triangle" portion; leaving the gas block in place... look around the internets, you'll see examples of this...

#6 Walker1847

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Posted October 11 2011 - 11:18 AM

rabbithunter21 said:



Do you think there is a possibilty that I wont have to remove the front sight at all?

This looks like you won't have to.

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#7 goosecatcher

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Posted October 11 2011 - 11:28 AM

Try out the scope first.  Its possible the front sight is not in the scope "window" as PGNHAWK suggested.

I ran this for a little while and I never saw the front sight post.  The focal point of the front sight is so close that it wouldn't even show a shadow in the field of view.  
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#8 Dfisch

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Posted October 11 2011 - 11:44 AM

http://www.ar15.com/..._4/226782_.html
Scroll about 2/3 of the way down.  I tried this once but I didn't remove the post from the barrel.  Good luck.
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#9 DanG

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Posted October 11 2011 - 12:35 PM

The odds are really good that you won't even notice the front sight base . Mount your scope, and try it before cutting/changing anything. I'll assume you have a removeable carry handle upper, which unscrews to reveal a rail , and you will mount your scope to that?
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#10 rabbithunter21

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Posted October 11 2011 - 12:45 PM

DanG said:

The odds are really good that you won't even notice the front sight base . Mount your scope, and try it before cutting/changing anything. I'll assume you have a removeable carry handle upper, which unscrews to reveal a rail , and you will mount your scope to that?
DanG

Yea Dan, I have a removable carry handle upper. As I am new to this, all i have to do is unscrew the two knobs and remove it right? Then mount the mount and scope?
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#11 DanG

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Posted October 11 2011 - 01:25 PM

Exactly right  !

#12 rabbithunter21

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Posted October 11 2011 - 01:26 PM

DanG said:

Exactly right  !

Thanks!!
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#13 Edward_Blake

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Posted October 11 2011 - 01:29 PM

At 4x you won't notice the front sight post. Certain mounts will raise the scope enough that 1 x will work also. The carry handle just unscrews. Good luck.
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#14 Babaloo

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Posted October 11 2011 - 01:34 PM

I cut the front sight off mine and put on a 2 piece flip up. Was a little unnerving but I managed to not touch the barrel at all. Came out great.
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