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5/11/2007 6:05:55 AM EDT
Does any one know which barre; twist the USMC A4 is issued with. I've heard 1/7, and 1/9. I've also been told that some of both have been issued; if so which configuration, and what ammo is the Trijicon USMC ACOG calibrated for?
5/11/2007 6:07:49 AM EDT
[#1]

Quoted:
Does any one know which barre; twist the USMC A4 is issued with. I've heard 1/7, and 1/9. I've also been told that some of both have been issued; if so which configuration, and what ammo is the Trijicon USMC ACOG calibrated for?


I'm in an 0311 fireteam and our's are 1/7..........not sure sure about the ACOG question.
5/11/2007 6:13:25 AM EDT
[#2]
Most likely issue 62 grain but call Trijicon, they might know. Not trying to be an ass.

edit: all of them are 1/7 as texascaveman said.
5/11/2007 6:14:47 AM EDT
[#3]
USMC issues two ACOGs primarily, the TA31RCOs. Both are calibrated for M855, one from a 14.5 and the other for 20s.
5/11/2007 6:52:23 AM EDT
[#4]

Quoted:
USMC issues two ACOGs primarily, the TA31RCOs. Both are calibrated for M855, one from a 14.5 and the other for 20s.


Yup...

1x7 twist... and the A4 is issued with the RCO/TA31F caliberated for the M855 (62gr) from the 20" barrel.

Major
5/11/2007 6:54:35 AM EDT
[#5]
Despite popularity for the 14.5", 16" M4 platform, I find the A4 platform to be very sexy, especially with KAC handguards and ACOGs.
5/11/2007 6:57:35 AM EDT
[#6]

Quoted:
Despite popularity for the 14.5", 16" M4 platform, I find the A4 platform to be very sexy, especially with KAC handguards and ACOGs.


I agree. I am shopping for the ACOG now. I have the KAC on my 20" and it's killer.
5/11/2007 7:53:53 AM EDT
[#7]
I found the TA31RCO-A4 for around $1000 from some vendors on ebay...
the rifle itself didn't cost that much...



Stag Lower
Sabre Defence Upper (1/7 - Chrome Lined)
KAC M5 RAS
5/11/2007 7:54:59 AM EDT
[#8]

Quoted:

Quoted:
Despite popularity for the 14.5", 16" M4 platform, I find the A4 platform to be very sexy, especially with KAC handguards and ACOGs.


I agree. I am shopping for the ACOG now. I have the KAC on my 20" and it's killer.


Fuck yeah dude, the 20" A4 kicks ass, I hope to some day own one.
5/11/2007 7:55:37 AM EDT
[#9]

Quoted:
I found the TA31RCO-A4 for around $1000 from some vendors on ebay...
the rifle itself didn't cost that much...

web.njit.edu/~kjg9305/images/M4/A4_1_800.jpg

Stag Lower
Sabre Defence Upper (1/7 - Chrome Lined)
KAC M5 RAS


Very, very sexy indeed.
5/11/2007 8:16:03 AM EDT
[#10]
height=8
Quoted:
height=8
Quoted:
height=8
Quoted:
Despite popularity for the 14.5", 16" M4 platform, I find the A4 platform to be very sexy, especially with KAC handguards and ACOGs.


I agree. I am shopping for the ACOG now. I have the KAC on my 20" and it's killer.


Fuck yeah dude, the 20" A4 kicks ass, I hope to some day own one.



DemonLoneWolf, If you like sir I have a 20" 1/9 that i'm trying to get rid of....let me know what you think?
-Rich-
5/11/2007 9:27:48 AM EDT
[#11]

Quoted:
Despite popularity for the 14.5", 16" M4 platform, I find the A4 platform to be very sexy, especially with KAC handguards and ACOGs.



I put KAC RAS HG on my LMT DEFENDER M4 14.5 w/ SOPMOD

They do Fit Rock SOLID

and looks great but better yet shoots EXTRA ACCURATE
5/11/2007 9:43:22 AM EDT
[#12]

Quoted:

Quoted:

Quoted:
Despite popularity for the 14.5", 16" M4 platform, I find the A4 platform to be very sexy, especially with KAC handguards and ACOGs.


I agree. I am shopping for the ACOG now. I have the KAC on my 20" and it's killer.


Fuck yeah dude, the 20" A4 kicks ass, I hope to some day own one.


I built this one a double star lower and a JT 20" rifle kit. The KAC M5 RAS are awsome. I just received my Bushmaster 20" 1/7 Gov profile barrel. I guess if I want to make it a true clone I should drop the Heavy Barrel and 1/9. I have a total of $877 in this rifle with the KAC and everything was purchased new.

5/11/2007 9:56:34 AM EDT
[#13]

Quoted:

Quoted:

Quoted:

Quoted:
Despite popularity for the 14.5", 16" M4 platform, I find the A4 platform to be very sexy, especially with KAC handguards and ACOGs.


I agree. I am shopping for the ACOG now. I have the KAC on my 20" and it's killer.


Fuck yeah dude, the 20" A4 kicks ass, I hope to some day own one.


I built this one a double star lower and a JT 20" rifle kit. The KAC M5 RAS are awsome. I just received my Bushmaster 20" 1/7 Gov profile barrel. I guess if I want to make it a true clone I should drop the Heavy Barrel and 1/9. I have a total of $877 in this rifle with the KAC and everything was purchased new.

i78.photobucket.com/albums/j95/crodeo/M16A4gery2.jpg


THat is a beauty!

But you MUST replace that CH with an ACOG or Aimpoint!
5/11/2007 10:41:04 AM EDT
[#14]
OST
5/11/2007 10:45:19 AM EDT
[#15]

Quoted:
THat is a beauty!

But you MUST replace that CH with an ACOG or Aimpoint!


There are actually plenty of A4s in Iraq with just a CH.
5/11/2007 11:31:37 AM EDT
[#16]
Ok just to double tap.

1 in 7 shooting mostly M855.  Little bit of the M262 stuff out there.  Some of out higher ups didn't want us having it thinking it was hollow points.

M5 Ras

Aimpoint, eotech, or Acog, or carry handle is approperate.

Acogs are either TA31A4, 31M4, or 31F(our truck driver had an F)

KAC broom handles, some guys buy Tango Down.  Various units issued harris bipods and or surefire lights(but us infantry dont need that type of stuff, make sure Motor T has surefires they need it)

Any sling you can find on the market is being fielded.  I mostly saw Specter slings, but there is the spec ops mamba, black hawk, eagle, etc.

Most guys don't have very many rail covers, 2 or 3 seems to be about normal.  Guys love to loose them in CAX.

No issue BUIS, you can carry your carry handle on you, and switch it out in combat if you have to.  We saw the Army and NG using Matech and KAC 200-600meter.  I put a Troy on mine.
5/11/2007 12:12:04 PM EDT
[#17]

Quoted:
Ok just to double tap.

1 in 7 shooting mostly M855.  Little bit of the M262 stuff out there.  Some of out higher ups didn't want us having it thinking it was hollow points.

M5 Ras

Aimpoint, eotech, or Acog, or carry handle is approperate.

Acogs are either TA31A4, 31M4, or 31F(our truck driver had an F)

KAC broom handles, some guys buy Tango Down.  Various units issued harris bipods and or surefire lights(but us infantry dont need that type of stuff, make sure Motor T has surefires they need it)

Any sling you can find on the market is being fielded.  I mostly saw Specter slings, but there is the spec ops mamba, black hawk, eagle, etc.

Most guys don't have very many rail covers, 2 or 3 seems to be about normal.  Guys love to loose them in CAX.

No issue BUIS, you can carry your carry handle on you, and switch it out in combat if you have to.  We saw the Army and NG using Matech and KAC 200-600meter.  I put a Troy on mine.


What he said....

Major
5/12/2007 7:01:48 AM EDT
[#18]
Our battalion received 25ish new M-16A4s before crossing the LD in 2003.  I've played with them and OIC'd the BZOing of new batches post LD.  I don't like them.  For one, I'm not a fan of the 20 inch barrel for today's mostly urban environments.  Than the addition of the KAC RIS adds another pound of weight so its up to 9 pound empty.  Add the RCO, PEQ-2, visibile light its probably in the 12 pound area.  It definately adds value in that all your mounts are now standardized with the KAC RIS because pre A4 (I was there) you had a special mount for the PEQ-2 via a barrel mount that poked through your handguards then you bolted it over your top handguard.  We had a few VLI lights and no ACOGs.

As always, its your money to play with but...

if you're going to build one of these as a model for your own SHTF, Red Dawn, Katrina, rifle than I would reconsider the size and weight issue for your own METT-SL.

If you want to build one of these as a historical/sentimental piece have at it; I wish I had that kind of liquid income.
5/13/2007 6:53:17 AM EDT
[#19]
No comments?
5/13/2007 6:58:46 AM EDT
[#20]
Ditto, my A4 with Acog, Peq2, Light, Gripod, got heavy.  Also the LOP is too long for me.  I will take a good late model A1 any day.
5/13/2007 9:00:53 AM EDT
[#21]
When you are carrying an M240B, 1000rds of the basic load, PAQ4, and an Elcan, then any AR platform is nice and light. That also means my A4 clone is nice and decked out.
5/15/2007 6:52:48 PM EDT
[#22]
5/15/2007 7:12:29 PM EDT
[#23]
I'll let you know all about mine when I get back.
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