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9/22/2017 12:11:25 AM
Posted: 9/8/2005 4:00:45 PM EDT
[Last Edit: 9/18/2005 12:13:16 PM EDT by 556Cliff]
What's the difference???
Link Posted: 9/8/2005 6:21:11 PM EDT
Link Posted: 9/8/2005 7:43:59 PM EDT
Link Posted: 9/9/2005 8:18:38 AM EDT

Originally Posted By CSGunWorkscom:

Originally Posted By new-arguy:
Better? No. Just different. Quality and function of the two are quite equal. RCO models are calibrated to specific barrel lengths (M4 version for the 14.5", A4 model for the 20"). the TA31F is callibrated to split the difference between 14.5" and 20" barrels to work reasonably well with either. Other than that, RCO models have horizantal stadia lines on the left and right of the reticle, and tethered adjustment caps. RCO model also comes with a coyote MOLLE compatible pouch.




+1

www.csgunworks.com
mike@csgunworks.com


Here’s some testimonials about CS GunWorks for AR15 Board
What do YOU have to say about CS GunWorks





+2
Link Posted: 9/9/2005 8:47:38 AM EDT
Link Posted: 9/9/2005 10:09:14 AM EDT
Thanks for the info!

I'm I right to think that both the RCO models and the TA31F are calibrated for use on flat tops only and not to be used on A2 carry handles?
Link Posted: 9/9/2005 10:17:50 AM EDT
Link Posted: 9/9/2005 12:20:39 PM EDT

Originally Posted By CSGunWorkscom:
Trijicon will tell you that they will only work on a flattop but the people that use them will tell you it does not matter if they are on a carry handle or on flattop.

www.csgunworks.com
mike@csgunworks.com


Here’s some testimonials about CS GunWorks for AR15 Board
What do YOU have to say about CS GunWorks



So that's a yes to my question?
Link Posted: 9/9/2005 12:34:14 PM EDT
there is a chart tacked up top with bdc for various bullets and mounts for the acog other than what is noted at the trijicon website.



here


so basically, yes

you can mount it which ever way you want, its basically user preferrence since its your scope after you bought it
Link Posted: 9/9/2005 12:36:48 PM EDT
Link Posted: 9/9/2005 1:24:30 PM EDT
Thanks guys!
Link Posted: 9/9/2005 5:39:46 PM EDT

Originally Posted By new-arguy:
Better? No. Just different. Quality and function of the two are quite equal. RCO models are calibrated to specific barrel lengths (M4 version for the 14.5",.



trijicon says:

"The TA31RCO is an Advanced Combat Optical Gunsight (ACOG) designed
for the M16M4 weapon system (16" barrel). "

Im confused...which is it?
Link Posted: 9/9/2005 6:29:49 PM EDT
[Last Edit: 9/9/2005 6:32:23 PM EDT by CSGunWorkscom]
Link Posted: 9/9/2005 8:03:00 PM EDT

Originally Posted By dsg2003gt:

Originally Posted By new-arguy:
Better? No. Just different. Quality and function of the two are quite equal. RCO models are calibrated to specific barrel lengths (M4 version for the 14.5",.



trijicon says:

"The TA31RCO is an Advanced Combat Optical Gunsight (ACOG) designed
for the M16M4 weapon system (16" barrel). "

Im confused...which is it?




i posted it earlier but i guess i was vague


here is bdc for different bbl. lengths and bullet wts. for the acogs.
Link Posted: 9/10/2005 6:38:41 AM EDT

Originally Posted By CSGunWorkscom:

Originally Posted By dsg2003gt:

Originally Posted By new-arguy:
Better? No. Just different. Quality and function of the two are quite equal. RCO models are calibrated to specific barrel lengths (M4 version for the 14.5",.



trijicon says:

"The TA31RCO is an Advanced Combat Optical Gunsight (ACOG) designed
for the M16M4 weapon system (16" barrel). "

Im confused...which is it?



Like I said Trijicon will tell you one thing but in reality there is more to it than what they say! The 14.5” barrel to the 16.5” barrel is not going to make that much of a difference. What will make a more of a difference are the altitude, temperature, and bullet coefficients. The BDC is a general guideline of what that round will do at a certain velocity. Most BDC software you use dose not use barrel length to help give your elevation dope.

Mike @ CSGW

www.csgunworks.com
mike@csgunworks.com



ah, I forgot that I posted that before. we really need to be able to suscribe to threads, i can never find my posts.

Thanks X 2
Link Posted: 9/10/2005 2:35:25 PM EDT
Link Posted: 9/10/2005 4:38:58 PM EDT

Originally Posted By new-arguy:
paying member can subscribe. Just $20 per year!



ill do it next month
Link Posted: 9/10/2005 9:22:47 PM EDT

Originally Posted By new-arguy:
paying member can subscribe. Just $20 per year!



$24 per year now.....
Link Posted: 9/11/2005 3:25:17 AM EDT

Originally Posted By Scollins:

Originally Posted By new-arguy:
paying member can subscribe. Just $20 per year!



$24 per year now.....



Still worth it.

I have a TA31 and TA31F and like both alot. I've shot a carbine with a TA31A and that is nice too. If I ever buy another 4X ACOG, I don't see any reason not to buy an RCO.
Link Posted: 9/11/2005 3:39:09 AM EDT
One thing I have noticed about the RCO vice a 31 or 31F, is the RCO is a bit slower to use. The mil lines seem to slow people down just a bit.
Link Posted: 9/11/2005 6:52:09 AM EDT

Originally Posted By STLRN:
One thing I have noticed about the RCO vice a 31 or 31F, is the RCO is a bit slower to use. The mil lines seem to slow people down just a bit.



Why does it slow people down?
Link Posted: 9/11/2005 8:57:35 AM EDT
Some find it a bit busy. The reticle pattern is trying to do too many things vice focusing one one.
Link Posted: 9/11/2005 12:31:14 PM EDT

Originally Posted By STLRN:
Some find it a bit busy. The reticle pattern is trying to do too many things vice focusing one one.



Yeah that's what I thought.
Link Posted: 9/12/2005 1:07:58 PM EDT

Originally Posted By new-arguy:
Better? No. Just different. Quality and function of the two are quite equal. RCO models are calibrated to specific barrel lengths (M4 version for the 14.5", A4 model for the 20"). the TA31F is callibrated to split the difference between 14.5" and 20" barrels to work reasonably well with either. Other than that, RCO models have horizantal stadia lines on the left and right of the reticle, and tethered adjustment caps. RCO model also comes with a coyote MOLLE compatible pouch.



I just got an E-mail back from Trijicon and they said that the TA31F was calibrated for only the 14.5" barrel and that the TA31RCO-M4 was calibrated for the 16" barrel.

So how did you get different info from what they're giving out?
Link Posted: 9/13/2005 2:26:23 PM EDT
Now I have a dumb question on zeroing. The ACOG manual is written and talks about a 30 meter zero. I cannot lay my hands on a 25M zero target for the ACOG, so used the regular one and guesstimated. I guesstimated wrong, the elevation is still off. I'm having to put the tip of the chevron on the sillhoutte's chin so I don't sail the round over the heads.

They are pretty drop resistant though, it got knocked off my desk ten minutes after I got it on the rifle for range day, I was about ready to kill the kid that did it.
Link Posted: 9/13/2005 2:43:18 PM EDT

Originally Posted By WiseguyThreeOne:
Now I have a dumb question on zeroing. The ACOG manual is written and talks about a 30 meter zero. I cannot lay my hands on a 25M zero target for the ACOG, so used the regular one and guesstimated. I guesstimated wrong, the elevation is still off. I'm having to put the tip of the chevron on the sillhoutte's chin so I don't sail the round over the heads.

They are pretty drop resistant though, it got knocked off my desk ten minutes after I got it on the rifle for range day, I was about ready to kill the kid that did it.



IM your .mil address, when I get to the office tomorrow I will send you an e-copy of the BZO target.
Link Posted: 9/14/2005 2:25:43 PM EDT
BTT.
Link Posted: 9/18/2005 12:16:55 PM EDT

Originally Posted By 556Cliff:

Originally Posted By new-arguy:
Better? No. Just different. Quality and function of the two are quite equal. RCO models are calibrated to specific barrel lengths (M4 version for the 14.5", A4 model for the 20"). the TA31F is callibrated to split the difference between 14.5" and 20" barrels to work reasonably well with either. Other than that, RCO models have horizantal stadia lines on the left and right of the reticle, and tethered adjustment caps. RCO model also comes with a coyote MOLLE compatible pouch.



I just got an E-mail back from Trijicon and they said that the TA31F was calibrated for only the 14.5" barrel and that the TA31RCO-M4 was calibrated for the 16" barrel.

So how did you get different info from what they're giving out?



Bump for answer.
Link Posted: 9/18/2005 1:53:25 PM EDT
[Last Edit: 9/18/2005 2:00:39 PM EDT by new-arguy]
Link Posted: 9/18/2005 5:17:55 PM EDT
[Last Edit: 9/18/2005 5:22:58 PM EDT by 556Cliff]
Thanks for the info.

I also think it's very strange though that theTA31RCO-M4 is optimized for a 16" barrel when it was ment to be used on a 14.5 M4 barrel. But the E-mail that I got from David Spencer at Trijicon did say "Typically, barrel length has very little influence on trajectory and the realized difference in point of impact is within the thickness of the stadia lines." So I guess were good to go.
Link Posted: 9/19/2005 2:21:07 PM EDT
Link Posted: 9/19/2005 6:48:50 PM EDT
Thanks, good info!
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