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Posted: 8/16/2004 6:51:21 PM EST
I am sending my Colt HBAR upper to Adco next week for barrel threading and cutting in anticipation of the AWB sunset. I figured since I was sending it up, I might get some more barrel work done to it.

Should I leave my HBAR barrel as is or have the M4 notch cut into it? Fluting also crossed my mind.
Link Posted: 8/16/2004 6:54:53 PM EST
I had an H-bar and sold it, with a callapsible stock on or short LE tactical stock the weight is just too far forward for my liking.

I purchased an M4 type cut bbl. and was very satisfied with the more balanced feel of the rifle.
Link Posted: 8/16/2004 6:57:34 PM EST
Have it turned to M4 profile, but without the M4 notch.
Link Posted: 8/16/2004 6:58:51 PM EST
Neither, just have it turned into a lightweight. If you think the M4 cut looks cool, go for it then.
Link Posted: 8/16/2004 6:59:00 PM EST
[Last Edit: 8/16/2004 6:59:57 PM EST by Msokol13]
combatjack:
would that be considered gov't profile then? Just wondering.
Link Posted: 8/16/2004 7:02:05 PM EST

Originally Posted By Msokol13:
combatjack:
would that be considered gov't profile then? Just wondering.



Yes, but the government has only purchased that contour on 20 inch barrels. The notch is the M4 barrels weakness.
Link Posted: 8/16/2004 7:03:57 PM EST

Originally Posted By Combat_Jack:

Originally Posted By Msokol13:
combatjack:
would that be considered gov't profile then? Just wondering.



Yes, but the government has only purchased that contour on 20 inch barrels. The notch is the M4 barrels weakness.




Can you elaborate as to what you mean by "weakness" you have my attention. Another curious question.
Link Posted: 8/16/2004 7:07:22 PM EST

Originally Posted By Msokol13:

Originally Posted By Combat_Jack:

Originally Posted By Msokol13:
combatjack:
would that be considered gov't profile then? Just wondering.



Yes, but the government has only purchased that contour on 20 inch barrels. The notch is the M4 barrels weakness.




Can you elaborate as to what you mean by "weakness" you have my attention. Another curious question.



Some say that it overheats. I have even heard claims that it will droop if you fire enough rounds on auto. I dont know what the truth is, but I cant believe that the cut is good for either accuracy or barrel life. It does look cool though. I imagine it makes the front and rear parts of the barrel flex seperately while firing.
Link Posted: 8/16/2004 7:12:53 PM EST
M203 cut is a waste of money, unless you have an M203 to mount on it.

fluting is costly. just buy a new upper or be happy with what you got!
Link Posted: 8/16/2004 7:18:43 PM EST
I was under the impression that an M4 bbl is an HBAR with the bbl trimmed for the M203. Am I wrong and if not, how much of a weight savings is this?
Link Posted: 8/16/2004 7:20:28 PM EST

Originally Posted By Getsome:
I was under the impression that an M4 bbl is an HBAR with the bbl trimmed for the M203. Am I wrong and if not, how much of a weight savings is this?



I believe M4 profile is thin underneath the handguards.
Link Posted: 8/16/2004 7:32:02 PM EST
I'm all about the M4 notch, "M4 look". Hbars are sweet but M4 style is sweeter. BTW, I'm about to send Adco at least two barrels to have work done.
Link Posted: 8/16/2004 8:03:19 PM EST

Originally Posted By Getsome:
I was under the impression that an M4 bbl is an HBAR with the bbl trimmed for the M203. Am I wrong and if not, how much of a weight savings is this?



Nah, its really light under the handguards.
Link Posted: 8/16/2004 8:18:39 PM EST

Originally Posted By Combat_Jack:

Originally Posted By Getsome:
I was under the impression that an M4 bbl is an HBAR with the bbl trimmed for the M203. Am I wrong and if not, how much of a weight savings is this?



Nah, its really light under the handguards.



I said it first!



Link Posted: 8/16/2004 8:55:08 PM EST

Originally Posted By Sniper_Wolfe:

Originally Posted By Combat_Jack:

Originally Posted By Getsome:
I was under the impression that an M4 bbl is an HBAR with the bbl trimmed for the M203. Am I wrong and if not, how much of a weight savings is this?



Nah, its really light under the handguards.



I said it first!






Sneaky little bastard, I'm gonna get you!
You gonna be at Gunstock again?
Link Posted: 8/16/2004 9:11:37 PM EST

Originally Posted By Getsome:
I was under the impression that an M4 bbl is an HBAR with the bbl trimmed for the M203. Am I wrong and if not, how much of a weight savings is this?



You are thinking of the M4A1.
Link Posted: 8/16/2004 9:12:48 PM EST
Link Posted: 8/16/2004 9:15:48 PM EST

Originally Posted By Lumpy196:

Originally Posted By Combat_Jack:
Have it turned to M4 profile, but without the M4 notch.




Holy shit, Lumpy just agreed with me! Its like I just got a celebrity autograph or something!
Link Posted: 8/16/2004 9:16:49 PM EST
Link Posted: 8/16/2004 9:18:19 PM EST

Originally Posted By Combat_Jack:

Originally Posted By Sniper_Wolfe:

Originally Posted By Combat_Jack:

Originally Posted By Getsome:
I was under the impression that an M4 bbl is an HBAR with the bbl trimmed for the M203. Am I wrong and if not, how much of a weight savings is this?



Nah, its really light under the handguards.



I said it first!






Sneaky little bastard, I'm gonna get you!
You gonna be at Gunstock again?



Probably.
Link Posted: 8/16/2004 9:29:04 PM EST
I was thinking of doing the exact same thing as you and was questioning the same ideas but I think i will just stick with my Hbar (Colt 6731). Have you ever compared a Colt Hbar to a Bushie, the Colt "heavy" section only goes out about three inches from the receiver, where as the Bushies go out almost to the FSB. No real point here other than my (don't know what model you have) carbine is not as heavy as other 16" Hbars, so I am going to leave as is.
Link Posted: 8/17/2004 4:21:54 AM EST
If you flute that Colt barrel, I'll Kill you! You might as well get it refinished in PINK TOO!
Link Posted: 8/17/2004 5:05:47 AM EST

Originally Posted By markm:
If you flute that Colt barrel, I'll Kill you! You might as well get it refinished in PINK TOO!



ewwww with a pink Cav arms lower!!!! Nice!!!
Link Posted: 8/17/2004 5:14:12 AM EST
If you're having it turned, I'd skip the notch. If you're buying new, the notch is usually there and you just deal with it.

Or, as someone else said, you could turn the whole thing down to a lightweight.
Link Posted: 8/17/2004 6:14:41 AM EST

Originally Posted By Offspring:
I am sending my Colt HBAR upper to Adco next week for barrel threading and cutting in anticipation of the AWB sunset. I figured since I was sending it up, I might get some more barrel work done to it.

Should I leave my HBAR barrel as is or have the M4 notch cut into it? Fluting also crossed my mind.



The notch by iteself is pointless (and makes you look really silly).

Getting a full M4 profile job (where the barrel is turned down under the handguards) so it's lightened makes a lot of sense.
Link Posted: 8/17/2004 6:24:26 AM EST
I voted "M4 notch" as I assumed you meant a true "M4" profile. If you were referring to the "notch" only than I would change my vote to leave it alone.
Link Posted: 8/17/2004 6:28:47 AM EST
I'd go for the A1 or superlight profile. As a semi, it probably won't get real hot and you'll like the lightness of the resulting carbine. I use to like my HBAR until I felt a superlight. Its a carbine, not a precision rifle.

Skip the M4 cuts, without the M203 it just weakens the barrel and looks wannabe.
Link Posted: 8/17/2004 6:48:58 AM EST

Originally Posted By MrPink:
Skip the M4 cuts, without the M203 it just weakens the barrel and looks wannabe.



I have to agree. For most people there's no point to the notch but looks.


However, fluting serves a purpose. It reduces the HBAR's weight and enhances cooling.


Link Posted: 8/17/2004 6:55:27 AM EST

Getting a full M4 profile job (where the barrel is turned down under the handguards) so it's lightened makes a lot of sense


This is what I was thinking of doing. After looking at the prices I would be better off buying a new barrel for $160.00. For now I am just going to get the barrel threaded and start on another complete upper.
Link Posted: 8/17/2004 9:20:54 AM EST
have it turned down and loose some barrel weight
Link Posted: 8/17/2004 5:19:18 PM EST
Anyone know what the difference in weight between the HBAR and the m4 govt profile is. I have the HBAR and with railed forend and accessories it is starting to feel more like a 24 inch varmint rifle than a carbine.
Link Posted: 8/17/2004 5:52:48 PM EST
M4 profile for sure. That notch is just sexy............I've said to much
Link Posted: 8/17/2004 7:23:58 PM EST
[Last Edit: 8/17/2004 7:25:22 PM EST by chewbacca]

Originally Posted By onrope1971:
Anyone know what the difference in weight between the HBAR and the m4 govt profile is. I have the HBAR and with railed forend and accessories it is starting to feel more like a 24 inch varmint rifle than a carbine.



Bushmaster Barrel Weights

Weight In Pounds, for milled front sight subtract 0.2 pounds



Barrel length_________Heavy Barrels________ Fluted Barrels

10"_________________2.0_________________1.9
11.5"_______________ 2.2_________________2.0
11.5/5.5"____________2.6_________________2.5
14.5"_______________ 2.5_________________2.2
14.5"AK_____________2.7_________________2.4
14.5"MY_____________2.7_________________2.4
14.5"AM (phantom)____2.7_________________2.4
16"_________________2.7_________________2.3
16" Dissipator________ 3.0_________________2.6
20"_________________3.5_________________3.0
24"_________________3.9_________________3.1
26"_________________4.0_________________3.2

Military Style Barrels rendition
14.5"M4_____________2.0
14.5"M4AK__________ 2.2
14.5"M4MY__________ 2.2
14.5"M4AM (phantom)_ 2.2
16"M4 Dissipator______ 2.3
16" Superlight________ 1.9
16"M4______________ 2.2
20"A2 (govt profile)____2.5


But be aware that this is just Bushie, there is no "standard" Hbar profile among the different manufacturers.


But to answer you r question: given equal barrel length the Hbar is .5 pound heavier.


Link Posted: 8/17/2004 8:39:42 PM EST
And if its the newer SOCCOM M4 barrel the HBAR in 14.5 is only 4 to 5 ounces heavier.
Link Posted: 8/17/2004 8:48:23 PM EST
I want to have a constant diamater barrel. I have been thinking about having mine milled down so that it is the same diamater under the handguards that it is in front of the gas block.
Link Posted: 8/17/2004 9:43:41 PM EST

Originally Posted By HighCaliber:
I want to have a constant diamater barrel. I have been thinking about having mine milled down so that it is the same diamater under the handguards that it is in front of the gas block.



Cool, but you want to have it thicker in the chamber area.
Link Posted: 8/18/2004 12:07:58 AM EST
Hey offspring i never new you can send in your hbar to get the barrel threaded? thats pretty neat i gotta get that checked out so whats the information on that will they refund you if the ban does not expire or what the hell am i talking about i hope it wont but anyways does any of you guys know where its heading i heard its going pretty good so tell me whats up and whats down will i be able to buy a colt m4a3 for sure after the sunset and buy all kinds of other weapons c- beta magazines and ect. get back to me sincerly, james johnson
Link Posted: 8/18/2004 8:26:01 AM EST

Originally Posted By giggy:
Hey offspring i never new you can send in your hbar to get the barrel threaded? thats pretty neat i gotta get that checked out so whats the information on that will they refund you if the ban does not expire or what the hell am i talking about i hope it wont but anyways does any of you guys know where its heading i heard its going pretty good so tell me whats up and whats down will i be able to buy a colt m4a3 for sure after the sunset and buy all kinds of other weapons c- beta magazines and ect. get back to me sincerly, james johnson



Recommendation: use punctuation, capitalization, and grammar.

To answer your question, Congress is not in session right now. I believe they will be back in session on Sept. 7. That leaves almost no time for the AWB to be renewed. However, Bush has said he would sign it if it came to his desk. The Republican-controlled Congress will undoubtedly not even let an AWB bill come up for a vote.

The other part depends on manufacturers. You will be able to buy an M4-type rifle. Beta C mags, almost certainly (although I believe the price will be about $250 or a little more). Lookout for high initial demand on new products though.
Link Posted: 8/18/2004 8:45:36 AM EST
is there any way to get a picture of this notch yoru talkin about.

My bushy has a 16" V-match fluted barrel on it, nice and light, and cools off pretty quick too. I like it
Link Posted: 8/18/2004 8:49:11 AM EST
Thanks for the info chewbacca!

It confirms for me that after the ban, my future Bushmaster 14.5in heavy fluted barrel with phantom will weigh only .2lbs more than my current 14.5in M4 barrel with muzzle brake/comp.

Link Posted: 8/18/2004 8:56:05 AM EST

Originally Posted By TimPack:
is there any way to get a picture of this notch yoru talkin about.

My bushy has a 16" V-match fluted barrel on it, nice and light, and cools off pretty quick too. I like it





The notch in the barrel in front of the front sight post.
Link Posted: 8/18/2004 1:26:12 PM EST
You are welcome RS, I am glad I could help.
Link Posted: 8/18/2004 1:27:59 PM EST
Why not just buy a real M4 barrel from Colt or one from Bushmaster? Seems more cost effective to me?
Link Posted: 8/18/2004 2:55:49 PM EST

Originally Posted By chewbacca:
]

Bushmaster Barrel Weights

Weight In Pounds, for milled front sight subtract 0.2 pounds



Barrel length_________Heavy Barrels________ Fluted Barrels

10"_________________2.0_________________1.9
11.5"_______________ 2.2_________________2.0
11.5/5.5"____________2.6_________________2.5
14.5"_______________ 2.5_________________2.2
14.5"AK_____________2.7_________________2.4
14.5"MY_____________2.7_________________2.4
14.5"AM (phantom)____2.7_________________2.4
16"_________________2.7_________________2.3
16" Dissipator________ 3.0_________________2.6
20"_________________3.5_________________3.0
24"_________________3.9_________________3.1
26"_________________4.0_________________3.2

Military Style Barrels rendition
14.5"M4_____________2.0
14.5"M4AK__________ 2.2
14.5"M4MY__________ 2.2
14.5"M4AM (phantom)_ 2.2
16"M4 Dissipator______ 2.3
16" Superlight________ 1.9
16"M4______________ 2.2
20"A2 (govt profile)____2.5


But be aware that this is just Bushie, there is no "standard" Hbar profile among the different manufacturers.


But to answer you r question: given equal barrel length the Hbar is .5 pound heavier.






hey chewie, do you have this chart assigned to an "f" key or something? or have you got it memorized by now? i see it 3 times a day!

Link Posted: 8/18/2004 4:15:50 PM EST
[Last Edit: 8/18/2004 4:17:16 PM EST by chewbacca]

Originally Posted By druncuncas:
hey chewie, do you have this chart assigned to an "f" key or something? or have you got it memorized by now? i see it 3 times a day!










I have been waiting for somebody to say that!! No but I keep the word doc its in open the whole time I am on this site becuase there always seems to be questions on barrel weight. I got the info from somebody on ARFCOM and saved it because I figured it would come in handy.

And apperently it HAS!!!
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