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Posted: 9/29/2004 5:46:27 PM EDT
I am starting on my first AR build and have decided on a 16" CAR with an A2 upper.  I would like to make it as light as possible and was wondering what the weight savings are between the heavy barrel and lightweight barrel configurations.
I have been looking at the kits offered by  J&T and Model 1.
Link Posted: 9/29/2004 6:09:15 PM EDT
[#1]

Quoted:
I am starting on my first AR build and have decided on a 16" CAR with an A2 upper.  I would like to make it as light as possible and was wondering what the weight savings are between the heavy barrel and lightweight barrel configurations.
I have been looking at the kits offered by  J&T and Model 1.



I have both a 16" Hbar gun and an SP1 carbine and the weight is very considerable.  If you want light go with a thin 16" type barrel.  BM makes one too.
Link Posted: 9/30/2004 8:19:08 AM EDT
[#2]
P806

Thanks for the reply.  What would be your rough guess on the weight savings?  A full pound maybe?
Link Posted: 9/30/2004 8:41:59 AM EDT
[#3]
I think even more important than the weight savings is the shift in the weapons balance. Even if it only saves a few ounces (it saves more, trust me), the balance makes it feel lighter.
Link Posted: 9/30/2004 9:49:49 AM EDT
[#4]
Its all about the weight distribution of the gun.  The Bushmaster Superlight barrel weighs in at 1.9lbs while the 16" HBAR weights in at 2.7lbs.  On paper, its only a 0.8lb difference, but on a carbine, its night and day.  The heaviest part of most ARs is the barrel, and its one of the few places where you can shave off weight and still have a functioning gun.  My SL carbine points like my finger, and starts and stops on a dime.  I highly recommend the Superlight barrel or the M4 profile barrel over the HBAR
Link Posted: 9/30/2004 3:34:52 PM EDT
[#5]
Thanks all, that was the info I was looking for.  
Link Posted: 10/2/2004 1:46:28 AM EDT
[#6]
Is the HBAR more accurate though? What are the advantages/disadvatages besides weight? Basically, why do they put HBARs on them?
Link Posted: 10/2/2004 1:48:19 AM EDT
[#7]

Quoted:
Is the HBAR more accurate though? What are the advantages/disadvatages besides weight? Basically, why do they put HBARs on them?



HBARs spend a lot less time on the lathe, so they are cheaper. Is this a combat arm or a target weapon? If its the former, you will probably never notice the difference. However, if you shoot 4 or 5 mags off really fast, you may experience a dramatic loss of accuracy.
Link Posted: 10/2/2004 1:50:52 AM EDT
[#8]
I was discussing defensive weapons tonight and commented that "HBAR was an acronym for stupid". They seem light until you hump them a mile or two at low ready.
Link Posted: 10/2/2004 2:04:23 AM EDT
[#9]
So they are more accurate after firing fast and alot in combat? I'm not usre I understand what you are saying...

My brother-in-law, who was a marine, said that his M16A2 also had a heavy barrel. Is this correct?

I just want the closest thing to what our military is carrying. Being a target weapon, I doubt I'll be humping it anywhere, except to the range and back. If the SHTF though, I want the most accurate rifle I can get.
Link Posted: 10/2/2004 2:07:40 AM EDT
[#10]
Lightweight barrels tend to droop or shoot large groups when they are extremely hot. If you are shooting a semi this shouldnt be a problem, unless you intentionally shoot a hell of a lot of rounds quickly.

The M16A2 has a government profile barrel. It is an A1 profile under the handguards and HBAR from the front sight base on. M4s have a similar profile, with the addition of the M4 barrel stepdown.
Link Posted: 10/2/2004 2:12:49 AM EDT
[#11]
Oh, okay. Thanks for the info!

Well. I ended up with a HBAR on my CAR from J&T last week. I didn't know I had the option of a light barrel until I read the catalog that came with it.hinking.gif

I probably would have opted for the light barel had I known but this rifle is still lighter than my M-1 carbine, so I can't complain too much. I'm still trying to justify my mistake though...
Link Posted: 10/2/2004 6:48:30 AM EDT
[#12]
The weight savings is in the balance; a pound at the front of your rifle feels much heavier than a pound farther back near the receiver. It's all about perception.
Link Posted: 10/2/2004 9:44:29 AM EDT
[#13]
Just wondering how the Bushmaster 16" superlight barrel compares weight wise to what colt uses on the 6520. Ive never shot with anything other than the HBAR, but after handling a 6520 at the show, I think the feel is much nicer.
Link Posted: 10/2/2004 10:55:29 PM EDT
[#14]
The 6520 looks like its the same as the Bushy light.
Link Posted: 10/3/2004 4:59:25 PM EDT
[#15]
It seems that most of the barrels in the build kits are HBARs.  It just does not make much sense to me on building a heavy carbine.  I went to a gun show today wishing to compare the weight differences, and all of the new AR's that were for sale had HBARs.  

I have not ordered the kit to build my new lower yet, but I know I will get a lightweight barrel.  When I build my next one it will not be a carbine setup so I will most likely get a long barreled fluted HBAR and then throw a bipod on the front for shooting at rest.
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