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Posted: 9/3/2004 9:37:35 PM EST
Can anyone tell me how (when the ban expires) if I can remove this brake? And whether or not there will be a threaded barrel underneath. It is Bushmaster. Any help would be appreciated.



Thanks gentlemen as allways!
Link Posted: 9/4/2004 7:21:07 AM EST
Yes, the Mini-Y-Comp can be removed. And yes, the barrel is threaded underneath the base of the compensator.
Link Posted: 9/4/2004 7:52:16 AM EST
Is it pinned? I can't find any welding discoloration. Or is it just Thread locked? Thanks again.
Link Posted: 9/4/2004 7:56:01 AM EST
[Last Edit: 9/4/2004 7:56:43 AM EST by JLM]
Scope this:

http://ar15.com/forums/topic.html?b=3&f=118&t=199258


There are 2 pins, one TDC on the brake, and one BDC. If you look real close you can see the welds. The look circular.

Link Posted: 9/4/2004 8:33:21 AM EST
Brakes on ARs should be banned. I can't wait to have an A2 FS put on the end of my 20" Bushy.
Link Posted: 9/4/2004 8:38:32 AM EST
Two things:
Just remember to wrap some tape around the barrel.
Grind down little by little untill you see the pin.
Link Posted: 9/4/2004 4:22:30 PM EST
TDC? BDC? sorry for my ignorance, but I can't see any welding marks, they have been very well hidden on mine! There are two pins in a mini Y? Are they top and bottom? Thanks
Link Posted: 9/4/2004 4:41:41 PM EST
It will have to be cut off and re-threaded. About an $85 job.
Link Posted: 9/4/2004 5:04:39 PM EST

Originally Posted By Rick357:
TDC? BDC? sorry for my ignorance, but I can't see any welding marks, they have been very well hidden on mine! There are two pins in a mini Y? Are they top and bottom? Thanks



Using some simple car lingo ... Top Dead Center and Bottom Dead Center, also known as the 12 o'clock and 6 o'clco positions.. looking at the barrel straight on. You will notice a spot weld, VERY faintly discolored, maybe .15-.20 inch diameter, at those locations.
Link Posted: 9/4/2004 6:01:37 PM EST
You won't need to rethread. A Phantom FH will fit without any problem.
Link Posted: 9/4/2004 11:08:06 PM EST
Cool, thanks
Link Posted: 9/4/2004 11:21:25 PM EST
[Last Edit: 9/4/2004 11:22:16 PM EST by SO-COM]

Originally Posted By Rick357:
Cool, thanks



ar15.com/forums/topic.html?b=3&f=118&t=199258

Check that thread if you have issues removing the pins. I posted as much info as I could about my experiences today. The pins were an UTTER BITCH to find after grinding away the weld. They are only about 2mm wide after you get past the weld, and if you grind too hard the metal will smooth over and make the same thing impossible to pin point. This is why I ended up splitting the brake. Honestly, it wasn't that hard now that I see how its done exactly. Its just as safe to do as long as you are careful with the dremel.
Link Posted: 9/14/2004 12:30:47 PM EST
HOLY CRAP!!!


I am attempting to remove my mini-y comp and it is a BITCH to unscrew from the barrel. Also, the chisel doesn't seem to work -- the metal simply isn't brittle enough. Help!
Link Posted: 9/14/2004 2:07:56 PM EST
One thing I am going to do before I cut my own mini-y off is to try and modify it first. as I'm going to basically destroy it taking it off, I might as well play with it. I'm going to try and grind off the ramps that force the blast back toward me. Then maybe try connecting the 2 holes (to make it like a AK style brake). Then continue the cuts from the holes out to the front (to make a duckbill type front end). And if I'm then still not satisfied with it, cut the thing off and pin on another device of some sort.

Anyone want to donate to me a removed mini-y to experiment with? I'll post pics of my progess in modifying it.
Link Posted: 9/14/2004 8:45:44 PM EST
[Last Edit: 9/14/2004 8:56:44 PM EST by FortyFiveAuto]
Finally got the stupid brake off....


Not before it got messy, though. First, I was looking at all these threads and people were saying how easy it was, so I didn't expect to spend the time that I did on this project. I yanked out the two pins no problem, but after that, I couldn't untorque the brake. So I decided to split it, but the metal was not brittle enough, so all I had was a half a mini-y comp with two large chisel gouges down the side, nearly 1mm to the crown of the barrel. I even left the damn barrel in Kroil overnight, but I still couldn't get enough torque on the sucker even on a vise (the vise couldn't grip it enough). So finally I just got a friend, said "screw it", and I held my M4 down on the table by the sight bases, gave him a 3/4" wrench, and told him to turn as hard as he could. The brake FINALLY unscrewed, but the amount of torque applied was enormous, nearly 40 ft/lbs. Isn't that the torque rating for wheel lugnuts??? Anyway, I am glad I got it off, now I am waiting for the Phantom haps
Good luck!!!
Link Posted: 9/14/2004 9:03:05 PM EST

Originally Posted By Dragonfly228:
One thing I am going to do before I cut my own mini-y off is to try and modify it first. as I'm going to basically destroy it taking it off, I might as well play with it. I'm going to try and grind off the ramps that force the blast back toward me. Then maybe try connecting the 2 holes (to make it like a AK style brake). Then continue the cuts from the holes out to the front (to make a duckbill type front end). And if I'm then still not satisfied with it, cut the thing off and pin on another device of some sort.

Anyone want to donate to me a removed mini-y to experiment with? I'll post pics of my progess in modifying it.



Hehe, man my mini-y comp was in 3 pieces after I was done removing it. I wouldn't have it any other way, since I hated the damn thing so much, except for maybe melted down into something useful, like a bayonet lug
Link Posted: 9/14/2004 9:25:20 PM EST
FortyFive, thanks for the advice, I think my plan at this point it is to send off the upper after my Bushmaster 16" S.I.R.S. Upper arrives. I just really don't have the time (or Patience at this point) to fuck with that upper right now. Although it is possible that I will do it myself, but just not now.
Link Posted: 9/15/2004 6:30:33 AM EST
Lugnuts on the wheels of my car specify 70 - 80 foot pounds of torque. I split the difference and set them at 75 during a tire rotation.
~Craig
Link Posted: 9/15/2004 11:07:23 AM EST
Ah, yes, it appears I was mistaken. My car's lugnuts specify at least 60 ft-lbs. Still, that's a mean amount of torque for a muzzle device, i think!
Link Posted: 9/15/2004 11:10:08 AM EST

Originally Posted By Rick357:
FortyFive, thanks for the advice, I think my plan at this point it is to send off the upper after my Bushmaster 16" S.I.R.S. Upper arrives. I just really don't have the time (or Patience at this point) to fuck with that upper right now. Although it is possible that I will do it myself, but just not now.



Yeah originally my plan was to go for a new 14.5" upper, or at the very least, a new 14.5" barrel. But then when I found out that the y-comp could be taken off with minimal effort, I figured it wasn't worth spending the extra $185 or whatever when I could just unscrew it. I guess the only thing I'm missing out on is the bayonet lug....
Link Posted: 9/25/2004 8:50:43 PM EST
tagged
Link Posted: 9/26/2004 5:04:10 PM EST
Well I finally got mine off. I tried the method of grinding the weld and locating the pins. iIfound the pins but they would not budge. I then cut the brake nearly in half and with a cold chisel started splitting the brake until I had enough leverage to brake one of the tabs off. I the quartered the brake with a Dremel cut off wheel beeing careful not to get into the threads a little at a time and hitting with a large hammer and chisel between grinding breaks finally it all came off. I had about 10 pieces of the brake when I was done. It took about two hours total. I do not reccomend this for those that are not that mechanically inclined or impatient like me. Would I do it again? Yes now that I know exactly how to do it. BTW the reason the pins would not budge was due the fact that moisture had gotten into the break / pin area and started to rust.
Link Posted: 10/2/2004 12:49:34 PM EST
I did mine today. The pins were located at 12 o'clock and 6 o'clock. I was using a dremel with a carbide tungsten grinding tool ($8.00 @ home depot).

The pins were kind of hard to see while grining. The metal from the break looks seamless w/ the pin. Perhaps it was because of the tip I was using... Anyway, mine pretty much fell right out, and then I was able to unscrew the mini y comp and toss it in the trash.

Now I just need to get my phantom :)
Link Posted: 10/2/2004 6:56:51 PM EST
[Last Edit: 10/2/2004 6:59:02 PM EST by armoredsaint]

Originally Posted By bump0x:
I did mine today. The pins were located at 12 o'clock and 6 o'clock. I was using a dremel with a carbide tungsten grinding tool ($8.00 @ home depot).

The pins were kind of hard to see while grining. The metal from the break looks seamless w/ the pin. Perhaps it was because of the tip I was using... Anyway, mine pretty much fell right out, and then I was able to unscrew the mini y comp and toss it in the trash.

Now I just need to get my phantom :)



How far was the pins from the peel/crush washer? Do you or anyone else have pics of the procedure? I need to remove my mini-y too, it sucks. Thanks!
Link Posted: 10/4/2004 12:32:36 PM EST
Here is a pic from my mini y removal.

Link Posted: 10/4/2004 1:52:23 PM EST

Originally Posted By armoredsaint:

Originally Posted By bump0x:
I did mine today. The pins were located at 12 o'clock and 6 o'clock. I was using a dremel with a carbide tungsten grinding tool ($8.00 @ home depot).

The pins were kind of hard to see while grining. The metal from the break looks seamless w/ the pin. Perhaps it was because of the tip I was using... Anyway, mine pretty much fell right out, and then I was able to unscrew the mini y comp and toss it in the trash.

Now I just need to get my phantom :)



How far was the pins from the peel/crush washer? Do you or anyone else have pics of the procedure? I need to remove my mini-y too, it sucks. Thanks!



Here is a crapola pic, but it should give you what you need.

http://www.thealangroup.com/chris/ycomp2.jpg
Link Posted: 10/11/2004 11:40:41 PM EST
I found this site searcing for just this info.Thanks alot guys.I did as instructed and everything worked no problems at all getting the comp off.It'll work better as a sinker for catfishing i think
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