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Site News Could You Have Stopped This? Vegas Shooting Analysis with Attorneys on Retainer
3/13/2007 9:54:30 PM EDT
Looking at putting together an AR for duty / 3-gun shooting.  I want a 16 inch government profile.  Of course I want quality and reliability.  I have heard good things about both LMT and SDI.  Which one is better.  LMT is cheaper especially since I can get LEO discount.  Any opinions.
3/14/2007 3:09:12 AM EDT
[#1]
For what ever its worth - LMT, COLT, and Vltor only produce mil spec parts. Some are and some are not at other companies
3/14/2007 4:15:50 AM EDT
[#2]

Quoted:
For what ever its worth - LMT, COLT, and Vltor only produce mil spec parts. Some are and some are not at other companies


Pretty sure SDI does as well.
3/14/2007 4:28:13 AM EDT
[#3]
At 16" I'd pick the 16" mid gas Sabre.
3/14/2007 8:11:02 AM EDT
[#4]

Quoted:
For what ever its worth - LMT, COLT, and Vltor only produce mil spec parts. Some are and some are not at other companies


SDI barrels are more mispec than LMT
3/14/2007 8:25:15 AM EDT
[#5]

Quoted:

Quoted:
For what ever its worth - LMT, COLT, and Vltor only produce mil spec parts. Some are and some are not at other companies


SDI barrels are more mispec than LMT


Specifically park under the FSB and taper pinned. Right Scott?
3/14/2007 10:38:06 AM EDT
[#6]
I have a 16" middy Sabre and absolutly love it. very smooth, and one of the cheapest uppers on the marker. I paid like 380 with a millitary discount from talon arms. With a CMt GCG the total was lile 510. hell of a deal for what you get.
3/14/2007 12:25:58 PM EDT
[#7]

Quoted:
SDI barrels are more mispec than LMT




I guess that's why SDI uppers are issued to NSW, not LMT. Right?
3/14/2007 3:34:40 PM EDT
[#8]

Quoted:

Quoted:

Quoted:
For what ever its worth - LMT, COLT, and Vltor only produce mil spec parts. Some are and some are not at other companies


SDI barrels are more mispec than LMT


Specifically park under the FSB and taper pinned. Right Scott?


Parked' under FSB, each part separately parked vs. parked as a whole unit, use of chrome vanadium steel, etc. etc. etc.
3/14/2007 8:29:39 PM EDT
[#9]

Quoted:

Quoted:
SDI barrels are more mispec than LMT




I guess that's why SDI uppers are issued to NSW, not LMT. Right?


If it's any comfort, SDI makes the barrels for Ma Deuce for the mil.  
3/15/2007 12:47:59 AM EDT
[#10]
Here's some info for you about the barrel you are looking at. I hope it helps you:


Sabre Defence Industries 16" Mid-length Barrel

All work is done in-house by Sabre.

Steel is full auto rated MIL-B-11595E Chrome Moly Vanadium (CMV)

They are MP tested per mil-spec regulation which is 1 out of 20 or less.
When they have a lot of 20 barrels, they select 1 or 2 to test. If either of those fail, that lot is quarantined and each barrel is tested to find out where the problem is. This is exactly what every major manufacturer does. Even though those other barrels are all marked MP, they are not all tested. Sabre elects not to mark their barrels the way the others do

5.56 NATO chamber

Button rifled 1:7 twist

The barrels stress-relieved so that they can be turned w/o releasing the barrel stresses and affecting accuracy.  After drilling and rifling, the Barrels are heated in a furnace to 1020 degree and held at this temp for 15 min then allowed to cool to 300 degree in the furnace then removed from furnace to cool to room temp. All this is done while hanging vertically from a button inserted into the bore so there is no stress on the blank while it is in the furnace.

Government profile
Dia. over the chamber is 0.980
The tapered portion under the hand guard is 0.675 to 0.600
Dia. just before the sight base is 0.844
front sight base "pad" is 0.750
barrel from sight base forward is 0.720
last step is 0.700

threaded 1/2x28

M4 barrel extensions

16" Mid-Length gas. (Gas port ~0.082" dia.)

Stripped weight: 1 lb. 11.0 OZ

F front sight base, pinned

Fully chrome lined

Parked under the front sight base

Stamped at above chamber: 7
Stamped under handguards: SABRE DEFENCE LOT xxxxx-x
Stamped between sight & muzzle: CMV-1/7-5.56 NATO (CHROME LINED)
3/15/2007 1:20:24 AM EDT
[#11]

Quoted:

Quoted:

Quoted:
For what ever its worth - LMT, COLT, and Vltor only produce mil spec parts. Some are and some are not at other companies


SDI barrels are more mispec than LMT


Specifically park under the FSB and taper pinned. Right Scott?

Not again



Quoted:
Here's some info for you about the barrel you are looking at. I hope it helps you:


Sabre Defence Industries 16" Mid-length Barrel

All work is done in-house by Sabre.

Steel is full auto rated MIL-B-11595E Chrome Moly Vanadium (CMV)

They are MP tested per mil-spec regulation which is 1 out of 20 or less.
When they have a lot of 20 barrels, they select 1 or 2 to test. If either of those fail, that lot is quarantined and each barrel is tested to find out where the problem is. This is exactly what every major manufacturer does. Even though those other barrels are all marked MP, they are not all tested. Sabre elects not to mark their barrels the way the others do

5.56 NATO chamber

Button rifled 1:7 twist

The barrels stress-relieved so that they can be turned w/o releasing the barrel stresses and affecting accuracy.  After drilling and rifling, the Barrels are heated in a furnace to 1020 degree and held at this temp for 15 min then allowed to cool to 300 degree in the furnace then removed from furnace to cool to room temp. All this is done while hanging vertically from a button inserted into the bore so there is no stress on the blank while it is in the furnace.

Government profile
Dia. over the chamber is 0.980
The tapered portion under the hand guard is 0.675 to 0.600
Dia. just before the sight base is 0.844
front sight base "pad" is 0.750
barrel from sight base forward is 0.720
last step is 0.700

threaded 1/2x28

M4 barrel extensions

16" Mid-Length gas. (Gas port ~0.082" dia.)

Stripped weight: 1 lb. 11.0 OZ

F front sight base, pinned

Fully chrome lined

Parked under the front sight base

Stamped at above chamber: 7
Stamped under handguards: SABRE DEFENCE LOT xxxxx-x
Stamped between sight & muzzle: CMV-1/7-5.56 NATO (CHROME LINED)

Where did you get this info from? I am a bit curious about the details of my SS SDI.
3/15/2007 1:24:44 AM EDT
[#12]

Quoted:

Quoted:
For what ever its worth - LMT, COLT, and Vltor only produce mil spec parts. Some are and some are not at other companies


SDI barrels are more mispec than LMT


The shit that comes out of this mans mouth, is hard to digest at times.

But then again, this is coming from the guy who said LMT doesn't proof fire their bolts.

Deal with it, or break down and cry harder.
3/15/2007 5:52:33 AM EDT
[#13]
I guess it depends if you want a mid-length or not.  If you do, SDI is the only option between the two.  I've had an LMT carbine length upper and still have an SDI mid-length upper.  I couldn't really tell any difference between them in terms of quaility.  They were/are both extremely nice uppers.  I just prefer mid-lengths.  

If no parking under the FSB is a dealer breaker, you should go with the SDI.  Also, if you want a 1/9 twist, SDI offers that as well.  

You really can't go wrong with either.  
3/15/2007 6:00:15 AM EDT
[#14]

Quoted:
Here's some info for you about the barrel you are looking at. I hope it helps you:


Sabre Defence Industries 16" Mid-length Barrel

All work is done in-house by Sabre.

Steel is full auto rated MIL-B-11595E Chrome Moly Vanadium (CMV)

They are MP tested per mil-spec regulation which is 1 out of 20 or less.
When they have a lot of 20 barrels, they select 1 or 2 to test. If either of those fail, that lot is quarantined and each barrel is tested to find out where the problem is. This is exactly what every major manufacturer does. Even though those other barrels are all marked MP, they are not all tested. Sabre elects not to mark their barrels the way the others do

5.56 NATO chamber

Button rifled 1:7 twist

The barrels stress-relieved so that they can be turned w/o releasing the barrel stresses and affecting accuracy.  After drilling and rifling, the Barrels are heated in a furnace to 1020 degree and held at this temp for 15 min then allowed to cool to 300 degree in the furnace then removed from furnace to cool to room temp. All this is done while hanging vertically from a button inserted into the bore so there is no stress on the blank while it is in the furnace.

Government profile
Dia. over the chamber is 0.980
The tapered portion under the hand guard is 0.675 to 0.600
Dia. just before the sight base is 0.844
front sight base "pad" is 0.750
barrel from sight base forward is 0.720
last step is 0.700

threaded 1/2x28

M4 barrel extensions

16" Mid-Length gas. (Gas port ~0.082" dia.)

Stripped weight: 1 lb. 11.0 OZ

F front sight base, pinned

Fully chrome lined

Parked under the front sight base

Stamped at above chamber: 7
Stamped under handguards: SABRE DEFENCE LOT xxxxx-x
Stamped between sight & muzzle: CMV-1/7-5.56 NATO (CHROME LINED)


I've been very impressed that SDI stamps lot numbers on their barrels.  This might be part of their ISO certification in quality control and lot tracking.  My SDI rifle is a very nice gun.

Having worked for Gov't contractors for most of my adult life, a company holding ISO 9001-2000 certification impresses me much more than one that can meet mil-specs.
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