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How-to Chop your Carry Handle into a BUIS (Page 1 of 3)
Posted: 10/6/2006 5:37:04 AM EDT
[Last Edit: Hemi-Cuda][Edited]
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Let's face it some of us don't condone doing this, but it's a great project if you're on a tight budget and you have an extra carrying handle laying around. I recently made a thread regarding the chop and someone asked for a How-To, so I figured I can give it a shot. Tools you will need: - Spare A3 Carry handle - Metal Cutting Hand-Saw (Stanley 6" 9$) - Sand-paper (150 Grit 4$) - Primer Spray Paint 3$ - Flat Black Spray Paint 3$ - Painting tape 3$ Note: You do not have to use primer and spray paint, if you can anodize it. Surprisingly the flat black matches very well to my reciever (Mega and Bushmaster), and I'm positive it will look fine with any other. If you have a dremel and other power-tools to help you with the job, then more power to you!  Warning: When doing the chop please wear protective clothing and a cover over your mouth and nose. Aluminum flakes can be TOXIC if inhaled or on the skin. Step one: Preparation  The carrying handle is layed out, you want to apply tape in front of the area you are about to begin cutting. I recommend starting from the top of the handle, as there is less mass to chop through. You want to begin the cut directly in front of the beveled region in front of the sight aperture and straight down. Step Two: Upper Region  I recommend making two incisions on each side of the rear sight guards, if you begin the cut with both edges simultaneously you will most likely begin sawing at an angle. Once you have begun the cut, you can remove the tape. Every couple of millimeters you take off, run some water over the cut to remove flaking. It will be extremely difficult to cut with aluminum flakes in the way.  You'll begin to notice that the straight cut leaves a protruding region to the left and between the rear aperture and elevation. Not to worry the sand paper will smooth everything right out.  Once you get past the rear sight guards, you want to start cutting diagnolly if you're using a hand saw. Notice I am not cutting directly downwards. Cutting in a diagnol will make it easier to finish the cut, since you are chopping through smaller mass.  The top of the carry handle should now be cut, you should be able to see the protruding region in this picture. Step Three: Lower-Region  Now we begin cutting the lower region. This time you want to flip the carry handle over, and cut in front of the rail arm (Okay I made that up, it's the piece that holds on to your picatinny rail  ). Set some tape in front of the cut again so you can begin a straight chop. Again I recommend cutting it diagnolly or vertically! Your final cut should look like this, without the "I can't hold my camera still blur."  Step Four: Sanding  Now we can begin the sanding. I used hand sand-paper and elbow grease. I layed a piece over my table and began grinding, the now, buis against it. Once I got a steady and smooth surface I began doing a couple of touch-ups to the rough edges with the sand paper by hand. Step Five: Final Touches  Now we lay down a layer of primer. I used the "Rustoleum" brand. If you're a sloppy painter, then you can apply two layers and use 500-1000 grit sand-paper to get rid of blemishes. I didn't bother painting the entire BUIS as to keep most of it's finish looking exactly the same. I covered the entire thing with tape, and left the area that was cut and sanded only to be painted.  The next morning we apply the flat black, which was also "Rustoleum" brand. I put 2 layers of black, to prevent chipping and exposed aluminum with scuffs.  The finished product before removing tape and putting it on my rifle. Finished Product   Total Price: 22$ Total Price of LMT Chopped BUIS: 119$ I hope this post helps someone out there on a tight budget! Or else you maggots just made me waste over an hour of my time
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racecar: It's sounds like your boner is effecting barrel harmonics.
Here’s how mine turned out a few years ago. With some blending and filing you can get very close to the look of the LMT BUIS. |
OH-58 AERO SCOUTS........"Un-armed and un-afraid!"
AR15.com "Retro Forum" and "Maintenance & Cleaning" Forum Moderator
AR15.com "Retro Forum" and "Maintenance & Cleaning" Forum Moderator
Ah thanks JER, someone said "blue" it in a thread. Figured it was possible. Fixed the error. |
racecar: It's sounds like your boner is effecting barrel harmonics.
Post some pictures on how it turns out!
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racecar: It's sounds like your boner is effecting barrel harmonics.
It's an Aimpoint Comp M3 www.aimpoint.com/o.o.i.s?id=258&product_id=115 |
racecar: It's sounds like your boner is effecting barrel harmonics.
www.ar15.com/forums/topic.html?b=3&f=18&t=237552 |
racecar: It's sounds like your boner is effecting barrel harmonics.
Bogus! Wow, remind me to tell all those aluminum parts I blued.  Correct: You cannot blue aluminum or any non-ferrous metal w/ blue designed for ferrous metal. They do make a thing called Aluminum Black and another formula designed for brass. Most metals oxidize to some extent and that is all you are doing; creating a colored oxide coating on the surface of the metal. |
Glad it helped  Now post some pictures! |
Originally Posted By AmericanPatriot1776:
The best thing Kurt Cobain ever released was the safety.
"Abe Lincoln may have freed all men, but Sam Colt made them equal."
The best thing Kurt Cobain ever released was the safety.
"Abe Lincoln may have freed all men, but Sam Colt made them equal."
Thanks for the info. I cut mine down. Here's a couple of pics, I actually sanded it down just a little more than yours for a smoother look. I turned out pretty good for an hours worth of work with a dremel tool.   IMG]i95.photobucket.com/albums/l152/superbee24/CUtcarryhandle.jpg |
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Here is the cut handle and cowitness. http://i95.photobucket.com/albums/l152/superbee24/CUtcarryhandle.jpg http://i95.photobucket.com/albums/l152/superbee24/cowitness.jpg |
Thanks for the compliments.  It was actually pretty easy with a demel tool. I wanted it to be as low profile as possible, so I sanded the "ears" down to where they are barely over the aperture. I also smoothed out a couple of sharp edges on it in a couple of places. Again, thanks for posting the instructions and giving us brave souls a guide. 
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Sadly, I used a hand saw. But yeah man, it turned out real nice. No problemo, glad it helped you.
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Originally Posted By AmericanPatriot1776:
The best thing Kurt Cobain ever released was the safety.
"Abe Lincoln may have freed all men, but Sam Colt made them equal."
The best thing Kurt Cobain ever released was the safety.
"Abe Lincoln may have freed all men, but Sam Colt made them equal."
HemiCuda, As promised...  Thanks for the guide...I'll use a band saw on the next one though... |
Great looking middy you got there, good job
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Originally Posted By AmericanPatriot1776:
The best thing Kurt Cobain ever released was the safety.
"Abe Lincoln may have freed all men, but Sam Colt made them equal."
The best thing Kurt Cobain ever released was the safety.
"Abe Lincoln may have freed all men, but Sam Colt made them equal."
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Does anyone have a pic of how this would cowitness with an Aimpoint? I have been debating getting a flip up BUIS but I didn't want to lose the distance adjustment. Do you look over the aperture when using the reflex sights or through it? Nice job to all who did this and posted pics. |
I'm trying to find my pic, I'll update but If you do this process depending on your mount you should have absolute co-witness (dot right over the front sight post) and since the Aimpoint is Parallax free, you can most certainly just aim over the aperture. Looking for pic, will update. 
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Originally Posted By AmericanPatriot1776:
The best thing Kurt Cobain ever released was the safety.
The best thing Kurt Cobain ever released was the safety.
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You can find pics here (first page, first post) of my EOTech/CCH BUIS combination and the views looking through it. I know it’s not an Aimpoint, but it’ll give you some basic idea of what to expect. FOR THOSE NEW TO THE AR: HERE ARE SOME “OPTICS OPTIONS”. |
We must reject the idea that every time a law's broken, society is guilty rather than the lawbreaker. It is time to restore the American precept that each individual is accountable for his actions.
Ronald Reagan
Ronald Reagan
This man is my tag team partner. 
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Originally Posted By AmericanPatriot1776:
The best thing Kurt Cobain ever released was the safety.
The best thing Kurt Cobain ever released was the safety.
|
We must reject the idea that every time a law's broken, society is guilty rather than the lawbreaker. It is time to restore the American precept that each individual is accountable for his actions.
Ronald Reagan
Ronald Reagan
|
Those kind of cut down carry handle sites go for $30 at AIM. I say sell your carry handle for $50 and buy the one at AIM for $30. No labor involved and you just made $20 www.aimsurplus.com/acatalog/Removable_AR15_M16_adjustable_Rear_Sight.html 
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Anyone have one of these from Aim? Stupid question...but what's the difference that makes LMT's version of the same thing cost nearly $100 more? It's got to be more than just the logo. |
Mil-Spec sight bases and I believe the LMTs are specifically machined to that shape, the ones on AIM look chopped. |
Originally Posted By AmericanPatriot1776:
The best thing Kurt Cobain ever released was the safety.
FREE TheDoctors308!
The best thing Kurt Cobain ever released was the safety.
FREE TheDoctors308!
I chopped an AR-10 carry handle that I got for cheap as cosmetic seconds from ArmaLite a few years ago. I get a good co-witness with my Aimpoint and an SR-25 flip-up front sight using a Bushmaster raised front sight blade. 
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http://carbine308.home.att.net
SUPREME <font size=2>كافر</font id=s2>
"All that is necessary for the triumph of evil is that good men do nothing." -Edmund Burke
SUPREME <font size=2>كافر</font id=s2>
"All that is necessary for the triumph of evil is that good men do nothing." -Edmund Burke
Yes I got one. And it was a waste of $30. First Problem: Sight sits to high. Had to raise the front sight/post so that it was even with the protective ears, just to get the bullets on the paper. And yes the rear sight was all the way down. Second Problem: Sight won't stay put. Even with the screw tighted with a screw driver the sight still moves back and forth on my RRA flat top receiver. It does not fall off, but can move about 1/8" of an inch back and forth. The good news. This crappy piece of chinese junk, pissed me off. And in my anger I found the motivation to chop my extra Bushmaster carry handle and make my own BUIS. And it came out great. Thanks Hemi-Cuda. |
I feel validated then. A couple nights ago I decided to give one of these "cut carry handle" sights a try, but I found one of the EE dealers selling the LMT for $89 delivered, and figured for the extra $60 over the Aim one, it was worth it to just get the quality one to start with. I should have it any day now. |
Wow excellent work Roger. You did a great a job. Really smooth painting and sanding.
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Originally Posted By AmericanPatriot1776:
The best thing Kurt Cobain ever released was the safety.
The best thing Kurt Cobain ever released was the safety.
+1 Excellent job! Looks a lot like mine. 
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If you would not be forgotten, as soon as you are dead and rotten, either write something worth reading or do things worth the writing. -Benjamin Franklin
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I did mine today. I'm more of a hack and don't really care if it looks perfect or not. Plus it's something I did with about a matter of less than 1/2 hour labor. Check it out: Here's how I did it: cut it with a chop saw shimmed it in a vice and went to town with a hand held belt sander and wallah: I used a sharpie to cover up the cut part If you don't sit there and inspect it, it looks just fine. If you nitpick it, yes, it's not as nice as some of you other guys. But it works the same as the nice looking one. One thing that I didn't realize is the sight picture is actually alot cleaner with the handle cut off. I used to get that reflection off the inside of the carry handle. This is way better. Plus a hair lighter. Every ounce counts on this one, it's an HBAR. |
Originally Posted By AmericanPatriot1776:
The best thing Kurt Cobain ever released was the safety.
The best thing Kurt Cobain ever released was the safety.
How-to Chop your Carry Handle into a BUIS (Page 1 of 3)
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