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sharpshot4life89
12-03-2007, 11:19 AM
so this is my first build and i have a lower all assembled, but im trying to decide, 14.5 or 16' barrel length? i wanna go with an lmt but, what do you guys think? any other brands that are worth mentioning against an lmt that offer a 14.5 and are high quality? i really like the whole 14.5 look with the m203 cut out, but are there any pros to the 16 that i need to know about? sorry, i know im a noob :rolleyes:

rksimple
12-03-2007, 11:23 AM
With the 16in you can have a threaded barrel and your choice of muzzle accesories. Make it a midlength and you'll be happy.

sharpshot4life89
12-03-2007, 11:24 AM
is there a reason for the mid length over the car length?

mxpatriot51
12-03-2007, 11:33 AM
Yes, a midlength gas system will have a softer recoil impulse and (in general) be more reliable.

Also, if you get a 14.5'' barrel, make sure to have the proper muzzle accessory welded/pinned in place. The barrel has to be 16'' long, by federal law. You can either have a regular 16'' (16'' at the threads) or a 14.5'' + 1.5'' of permenantly attached muzzle device. Note, if you are building a "featureless" build (Monsterman grip/cal rifles stock) and plan using detachable magazines, you cannot have a flash hider.

5968
12-03-2007, 3:19 PM
I would go with the 16" if not an 18" like rksimple stated.

SS109
12-03-2007, 3:40 PM
I'd go with a midlength 16".

NRAhighpowershooter
12-03-2007, 3:40 PM
I have all 3 :D

16" CAR
18" middie
11.5/4.5FS

The 18 middie and the 11.5/4.5fs both have the least felt recoil than my 16" car and my 20" GI upper

PIRATE14
12-03-2007, 3:45 PM
Most of my tactical rifles have a 14.5" barrel....been using them sucessfully for 25 years......

The military doesn't use a midlength....

If you like the looks of a 14.5 for a proper M4 look....get it....

You'll be pleased by the performance.....

COLT and LMT are top notch performers.....if you like the 14.5....you can also look at CMMG and the latest trickery from Noveske.....:chris:

One drawback is that you'll need to pin a Flash suppressor or muzzle break for the legal 16" length......

The 14.7 offered by CMMG lets you use a regular A2 Birdcage for a more realistic look........

50 Freak
12-03-2007, 3:49 PM
16 without a doubt. 18 if you want to do a little further shooting.

eviioiive
12-03-2007, 4:11 PM
16 mid...

Prince50
12-03-2007, 4:23 PM
Not to hijack, but I have a SWEET Middy Armalite upper FS over in the marketplace on this board. Mid length uppers are my favorite. Now I want one in 7.62x39mm too.

Darin

5968
12-03-2007, 4:26 PM
"Mid-length" refers to the gas port position rather than the barrel length. You can have a 14.5", 16" and 18" barrel with a mid-length gas system (gas port position and corresponding gas tube length). Or a carbine length gas system if you choose. Or an 18" with a rifle length gas system even.

OK, I'll fix it to read how I meant it. I would go with the mid length 16" like rksimple stated, if not an 18" . ;)

TMC
12-03-2007, 4:28 PM
I have a 14.5 with a pinned and welded FH. No you can't get the front sight base off or the barrel nut if you want to make a change BUT, the gun looks much shorter than a 16 with a FH, in fact whenever I go to a public range I get asked if it legal, its looks that much shorter. So you get the mall ninja cool factor with a 14.5. See it in action HERE (http://www.youtube.com/watch?v=BwvRxZiZDOw)

Jeffy
12-03-2007, 4:35 PM
When I was searching for an upper, I found that the selection of 14.5's with a pinned FH is a bit sparse. You'll need the store/shop to pin the FH before it ships to you. CMMG seems to be one of the best at giving you choices with a pinned FH. For a 14.5" you'll need a FH like a Phantom, extended A, Vortex, etc. There is also another option, to go with a 14.7" and use a standard A2 FH to reach 16". Those are even harder to find pre-configured then the 14.5's.

You'll have a lot more flexibility by going with a 16" barrel. They also tend to be a bit cheaper. Someone posted a chart on the main players and what makes them different in my thread (http://www.calguns.net/calgunforum/showthread.php?t=77174). I was set on getting a 14.5 but changed my mind recently. Now I'm building a 16" middy.

I think LMT only makes carbine's in 10.5, 14.5 and 16" so if you want a mid-length gas system, you'll have to look elsewhere.

Have a budget?

sharpshot4life89
12-03-2007, 7:17 PM
um im willing to spend around 600-700 on the upper

SuperSet
12-03-2007, 7:23 PM
With that budget, you can afford pretty much any out-of-the-box upper except JP.
To echo everyone else's thoughts, even though I love my CMMG 14.5 + perm MB, I'd get a 16" next time. It'll save me the hassle of finding a gunsmith to remove the integrated FH and replace with the MB. This is a consideration if you decide to go featureless.
Good luck!

sharpshot4life89
12-03-2007, 7:37 PM
hows CMMG? is it pretty nice? and what is JP?

Jeffy
12-03-2007, 8:33 PM
um im willing to spend around 600-700 on the upper

Do you want quad rails? Free Floating Handguards? If so that will take a big chunk out of your budget. ($200-300) Also, is that including back up iron sights (BUIS)? If you want flip-up's that could take $100-200.

hows CMMG? is it pretty nice? and what is JP?

I'll repost this. I was very close to buying a CMMG but after pricing out what I wanted, exactly, I had to go a different route. OpticsPlus had some really good prices. PM him.

http://i134.photobucket.com/albums/q111/rob_s/gun%20stuff/071120-AR-Comparison-Chart.jpg

paladin4415
12-03-2007, 8:41 PM
Get in contact with Randall (AR15barrels.com). He posts here all the time. He will sell you an LMT 14.5 and perm. attach a Phantom or Vortex or whatever flashhider you want at a good price. LMT is a very good product. A 14.5 will balance better than a 16" upper. For a carbine, lighter/shorter is better.

Socal858
12-03-2007, 8:54 PM
i would buy a 14.5 again over my old 16. the 16 feels weird. lined it up to my 20" flattop and there wasnt even a huge diff in length

FreedomIsNotFree
12-03-2007, 9:05 PM
Go with the 14.5 with a permanently attached Phantom 5C2....its an awesome look. Plus you can impale someone with your flash hider if the need arises....:)

I went with the LMT and love it. Its light, accurate and looks menacing. One word of advice though....you might want to consider something other than an LMT for the BCG. Mine has had sporadic issues and I know a couple other folks that have as well.

TMC
12-03-2007, 10:27 PM
and what is JP?

JP Enterprises (www.jprifles.com), maker of some of the coolest looking and best shooting AR's around.

Roo
12-03-2007, 10:36 PM
Go 14.5" I love my CMMG.

ar15barrels
12-03-2007, 10:37 PM
14.5"/14.8" mid-length is the shiznit. ;)

SuperSet
12-03-2007, 11:00 PM
hows CMMG? is it pretty nice? and what is JP?

My CMMG upper is very nice. You won't be disappointed if you decide to buy one from their website and customize it to your heart's content. Go with the muzzle brake so you can use either MonsterMan or Bullet-Button.

bwiese
12-03-2007, 11:06 PM
Recently I've been thinking about replacing it with a CMMG 14.5 midlength.

I like the way my M4 barrel handles, but I don't want the weight.

Ted have you looked at a CMMG MedCon bbl? Different profile/taper, no M203 notch etc. It may balance better and yet not be a 'flexy stick' - i.e, accuracy + portability...

brianm767
12-03-2007, 11:19 PM
I took one of my Colt comp Hbars and converted to a M4gery, I used a Bushy 14.5 with a Izzy brake? Don't know how it shoots yet, but it looks cool , looks much shorter than a 16" even thought it's only 1.5" shorter,and much lighter than my other Colt Hbars.
http://i18.photobucket.com/albums/b116/brianm767/xxxxxx.jpg

ar15barrels
12-03-2007, 11:20 PM
Y'know that 16" preban Bushmaster lightweight barrel I had you thread the muzzle on a couple of years back? I wish I'd had you cut it back to 14.5 and pin the Phantom in place.

I did one just like that for Forest too.
After about a year, he sent it and had it turned into a 14.8" with permanent A2. ;)

sharpshot4life89
12-04-2007, 1:26 PM
i want the upper to be completely milspec, does that change things... could i have a list of the milspec brands and models?

sharpshot4life89
12-04-2007, 1:29 PM
also on the cmmg's whats the difference between socom and regular?

J_Rock
12-04-2007, 1:35 PM
also on the cmmg's whats the difference between socom and regular?
the socom barrel has a heavier profile under the handguards

ar15barrels
12-04-2007, 1:36 PM
The standard A2 flash suppressor is too short to achieve a 16"m length, you'll need to use a slightly longer non-milspec aftermarket flash suppressor.

Or a spacer. ;)

http://ar15barrels.com/tech/a2spacer.jpg

sharpshot4life89
12-04-2007, 1:37 PM
so is that the only brands that are milspec? and, is the flash suppressor the only part that makes it non-milspec, cuz i dont really care about that...

sharpshot4life89
12-04-2007, 1:39 PM
with that spacer, would there be exposed threads near the muzzle?

ar15barrels
12-04-2007, 1:39 PM
so is that the only brands that are milspec? and, is the flash suppressor the only part that makes it non-milspec, cuz i dont really care about that...

LMT is the next closest to the Mil-spec.
Some would argue that LMT is actually better than Colt.
Matching the mil-spec does not make it the best, just what the .gov wants to buy.
You can certainly have a rifle that's better than mil-spec. ;)

ar15barrels
12-04-2007, 1:40 PM
with that spacer, would there be exposed threads near the muzzle?

Yes.
There will be a few more threads exposed inside than are normally exposed inside.

sharpshot4life89
12-04-2007, 1:42 PM
so is LMT my best bet then? i mean i want the most durable, rugged, reliable CAR 14.5 there is, i mean i plan on USING it...

sharpshot4life89
12-04-2007, 1:42 PM
Yes.
There will be a few more threads exposed inside than are normally exposed inside.

are there normally threads exposed? without the spacer?

lumpia
12-04-2007, 2:02 PM
My CMMG upper is very nice. You won't be disappointed if you decide to buy one from their website and customize it to your heart's content. Go with the muzzle brake so you can use either MonsterMan or Bullet-Button.


Hmm..I'm confused now. You can't use a Phantom FH with a Bullet Button?

lumpia
12-04-2007, 2:10 PM
the socom barrel has a heavier profile under the handguards


What's the pros/cons of the heavier profile?

ar15barrels
12-04-2007, 2:37 PM
so is LMT my best bet then? i mean i want the most durable, rugged, reliable CAR 14.5 there is, i mean i plan on USING it...

Either Colt or LMT would be excellent.

ar15barrels
12-04-2007, 2:38 PM
are there normally threads exposed? without the spacer?

Yes.

ar15barrels
12-04-2007, 2:39 PM
Hmm..I'm confused now. You can't use a Phantom FH with a Bullet Button?

Some people have registered AW lowers.
Those can use almost anything as long as it's over 16" barrel length.

apbrian112
12-04-2007, 2:39 PM
Hmm..I'm confused now. You can't use a Phantom FH with a Bullet Button?


no, you can, i think he was saying to choose the phantom so that you have the option of using the same upper on a featureless build (MMG) or a bullet button/mag lock.

ar15barrels
12-04-2007, 2:40 PM
The barrels would literally heat up to the point where a hole would melt in them.

Hmmm...
Did they have magic gas tubes?

SuperSet
12-04-2007, 6:06 PM
no, you can, i think he was saying to choose the phantom so that you have the option of using the same upper on a featureless build (MMG) or a bullet button/mag lock.

Yep, sorry if I wasn't clear earlier. Apbrian112 is correct in that you can use a muzzle brake-enabled upper with either builds.
Are you planning to compete with your AR? If yes, featureless is the better option.