So you’re trying to say a LW profile barrel should not be used on a “serious use” or duty rifle? I think the majority of this forum begs to differ. If you’re shooting semi then LW is the way to go. I’ve put hundreds of rounds through mine in rapid fire and never had a problem with accuracy or my hand guards getting too hot… and I usually don’t even wear gloves… Sure it heats up a bit faster, but it also cools of significantly faster. Either way will serve you well, but it’s just ridiculous to try and say that a LW profile is not for “serious use”. I mean… really… seriously?? c’mon…
Incorrect. http://www.tacticalyellowvisor.net/charts/free-float-rails
10" DD 12.5oz - 11" NSR 10oz = 2.5oz = 20% lighter.
12" DD 15.3oz - 13.5" NSR 11.1oz = 4.2oz = 27.4% lighter
Not to mention the comparative NSR’s are longer… Just saying. 
I was referring to the DD 11 vs NSR 13.5. 1.4oz.
I would never choose a skinny/pencil barrel for a serious use rifle. Think outside the range to real life situations. Pencil barrels can’t handle the heat of sustained rates of fire nearly as well as a standard barrel. More importantly, pencil barrels will not resist being damaged (bent) from real world abuse nearly as well as a g-profile or other thicker barrel. Heck, I’ve seen guys bend g-profile barrels just in normal maneuvers (shit happens), so why the heck would I want a weaker barrel?
Not all the parts are my cup of tea, but good job on the build. It fits your criteria and shoots well. Weight is in the right area and it should be managable under recoil.
Thats all we can ask for right. As long as your comfortable, we are all comfortable.
I haven’t seen the brass catcher before, do you have a pic of it installed?
http://www.3bucc.com/feature.htm
Brownells sells em. Nice quality.
Tried to move scope, won’t fit. Waiting on larue mount.
Can you describe what transpired when you witnessed the government profile barrel sustain damage? Just curious. Did the guy fall on his rifle or drop it a certain way?
OP I like your build. Do you still have a commercial receiver extension on that lower though?
How can you tell? But yes, RRA uses Commercial sized buffer tubes, so I left it.
LW Barrels are great for hunting or a situation where only a few rounds are going to be fired. Anything past a magazine, opt for a thicker barrel for several reasons: Heat build-up, Strength, ability to withstand abuse (one of the main reasons for going to a thicker barrel in Viet Nam was troops using their rifles to open up cases of ammo/C-rats by twisting the metal bands and bending the barrels. Not right, but it happens).
I’m a big fan of the lightweight barrels, and I’m not the only person who feels that way.
All of the guys I know that have done special things in special places prefer less weight to more.
Just because Joe can go full retard and bend his gun doesn’t make a heavy barrel a really good idea. At some point these sorts of things are going to result in the barrel being bent at the upper (not steel it is, thus easier to deform than the barrel), or between the receiver extension (aka buffer tube) and the lower.
I’ve shot M16a1s to the point that the gas tube is glowing, never had an issue with the barrel failing at that point.
Guy took a digger dd’ing over uneven ground moving with weapon pointed at the deck.
Don’t confuse a heavy barrel with a standard profile. There is as clear a difference between a heavy barrel and a standard barrel as there is between a standard barrel and a pencil/skinny/lightweight.
nice rifle.
Nice build, OP.
zimm17,
I like your build.
Out of curiosity, why did you choose the brakeout over the blackout or straight muzzle break? I’m still using an A2 on my SHTF gun but I have been considering other muzzle devices and I would like to hear your rationale.
Otherwise, great job, I really like the scope choice.
I just didn’t want to deal with “ping” issue I read about with the flash hider. The break I didn’t think I need with a .223. The breakout has a little of both and it was cheaper. I’m going with the break for my 300 blackout build though.
Per Dave Lutz they discovered after the spec was set in stone that the A1 barrels had burrs at the gas port and that was the cause of the issue.
I’m placing accuracy higher on my list than I used to but using my lightweight barrels in classes I never saw a problem.
Larue mount finally came in. Going to sight it in today.
Really nice rifle. I love the way the ars look with scopes on them. I plan on setting mine up with scope as well.
Obviously you guys don’t really own or have much experience with LW profile barrels. Seriously. A magazine is all it’s good for? I will blow through 5-6 mags with my BCM BFH 16" LW Middy in a matter of a couple minutes and have never had a problem with accuracy or otherwise. Go take a carbine class and you’ll see the majority of people now days are running LW profiles. Stop talking out of your ass.
edit: I also do not baby my carbine whatsoever and it’s been banged around plenty, fallen onto, tripped over, blah blah ,you name it. It’s never bent. If anything for a “serious use” or “real world situation” rifle/carbine then I would actually prefer a LW profile. I don’t plan on opening any metal drums with it, regardless of barrel profile. Where do some of you guys come up with this shit??
Wow, that was uncalled for.
It is completely possible to express a differing opinion without attempting to belittle people whom you know NOTHING about and making yourself look like a blow-hard. I suggest you take a class in civility or go back to arfcom.