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Posted: 10/14/2002 7:13:58 PM EDT
Does anyone here know how the mini Y-comp on the Bushy M4gery is permanantly attached? I'd like to replace it with an OPS brake that I recently aquired, but I don't want to start grinding the shit out of it without first knowing where I'm headed.

Link Posted: 10/15/2002 12:31:26 AM EDT
I believe it's called "Blind Pin." If you look carefully enough, you should see small circles on the comp where the pin was grinded down and refinished.
Link Posted: 10/15/2002 8:50:01 AM EDT
[Last Edit: 10/15/2002 6:38:45 PM EDT by SBR7_11]
Use a cylindrical cutter and cut almost to the threads, turn front half off (may be able to see where it cracked into 2 pieces. After removing front, "warm the small rear piece, and remove it (I needed a pair of "grips" to turn it loose, as it was still torqued to barrel flange). You will probably never see the pins when cutting.

See 5.5" in picture, thats a 308 shell holding together for visual reference.

Link Posted: 10/15/2002 1:06:23 PM EDT
I've had luck doing it a little differently. First determine where the end of the barrel is by iserting a dowel or whatever you have in the muzzle end until you hit the end of the barrel and use this as a guide to measure where to cut the muzzle brake off (leave an eight of an inch or so to avoid damaging the barrel.) Cut the brake off with a hacksaw or cutoff wheel. Then I use a dremel cutoff wheel to make two cuts lengthwise (parallel to the barrel), nearly through the thickness of the brake. Then I insert a strong screwdriver or pry bar into one of the cuts I just made and pry it apart. The remaining piece of the brake should pop off. The only tricky part is determining how deep to make your lengthwise cuts with the dremel tool. Even if you go a little deep and nick the barrel threads, the new flashider or brake covers it when it screws on.
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