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Posted: 7/4/2002 10:24:00 PM EDT
[#1]
Just contact Bushmaster. They most likely will recomend a barrel replacement. Just make sure you install a new Bushmaster bolt or better yet send the upper to them and tell them what you want. That is unless you have a GOOD local AR 15 gunsmith around. I have a 20" fluted weapon and I love it. My son has a disapator 16" non - fluted HBAR and there isn't much difference in weight. The big difference is how fast mine cools off compaired to his. Unreal ! Plus the fluted barrel looks way cool.
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Posted: 7/4/2002 11:15:41 PM EDT
[#2]
The 16" HBAR is heavier than the 20" A2-profile barrel!
Since you have a pre-ban, get the 14.5" M4 barrel with a Phantom permanently attached to make it 16" legally, and you're good to go. If you send your upper to BM, they'll install the new barrel for you for free (you have to buy the new barrel from them) and send your upper and old barrel back to you. Bushmaster won't flute an existing barrel; they only do fluting as part of the production process, and doing it after would require complete disassembly of the barrel assembly. They don't have time for that. The other alternative is to send your upper to Kurt at KKF and have him turn your barrel down to the M4 profile, or whatever you like. -Troy |
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Posted: 7/5/2002 7:43:04 PM EDT
[#3]
I'm sending a 20" hbar to KKF tomorrow for a diet. I wanted more weight reduction than just the fluting, so it's being turned and fluted. I'm keeping the "step" profile of the hbar, just the "steps" will be smaller. I prefer that to the A2 govt. profile because the maximum stress on the barrel when carrying, slung, ect is back by the chamber with the least being up by the muzzle. His prices are reasonable and I'm getting exactly the barrel profile I want! And as sniper1az stated, much better cooling too!
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Posted: 7/5/2002 9:32:52 PM EDT
[#4]
Ok guys, just remember that you cannot go blasting with those thin barrels . That's the current problem with the M4. After 5 mags in rapid fire, the barrels get so hot & will "plastisize". Neighbor showed me a photo of an M4 that got too hot & drooped just past the barrel nut. The bullet came out 4" from the nut. Had to remind his Sgt. to slow down the rate of fire. So NO MORE THAN 3 30 ROUND MAGS UNTIL IT COOLS OFF ! This is why I shoot a fluted HBAR.
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Posted: 7/6/2002 2:27:09 PM EDT
[#5]
The problem is that too many people think that, just because the M4A1 has an "AUTO" switch, that it can be used like a SAW. It's a rifle, not a machinegun.
-Troy |
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Posted: 7/6/2002 5:50:41 PM EDT
[#6]
This is what I was told by Bushmaster when I asked to have my 20" fluted. They say it is only done in the white part of the process. They do not take your barrel and flute it.
Like said above there are places that will do it. I have asked and was told that it is better to get a Barrel that was processed from the start for fluting. I really do not know how true that is. |
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Posted: 7/18/2002 8:12:26 PM EDT
[#7]
Good info from: www.riflebarrels.com/faq.htm#stress
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