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Posted: 12/31/2006 3:17:25 PM EDT
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Im thinking about getting an ACOG. The TA01 looks like the one for me thus far. Dont like the triangle, dohnut or cheveron riticules cause I'm going for persision, and the TA01 is cheaper. have 1st: Is the TA01's BDC the same as TA01NSN? I know the TAO1 is for 62gr. M855 out of a 16" barrel. Is there a difference between the two? 2nd: The BDC on the ACOGs are all measured in meters not yards right? Is there one in yards? 3rd: Im not familiar with meters so if use an ACOG and zero at 100 yards, the rest of the BDC means nothing after that right? They should be slightly off the longer you shoot. Any input would be great! |
| I just read that the the TA01 does not have Bindon Aiming Concept (BAC). So I have another question to add to my original post. Whats BAC? and how does it work? I guess its important for close range and it has something to do with keeping both eyes open? help would be great. |
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First the easy question: BAC means that the reticle is illuminated bright enough that you can use the optic for CQB by looking at the target with your weak eye and looking at reticle with the strong eye. The models with BAC have a very large, exposed fiber optic top on top to pull in enough light to make the reticle bright. As for the BDC, you need to look not only at what load it is set up for but the height above the bore. I don't remember the details, but I think the NSN model is calibrated for Mk262 ammo from a 14.5" barrel and with the optic mounted on the flat-top while the non-NSN model TA01 is calibrated for the same thing but when mounted on top of an A2 carry handle. It's been a while since I've paid attention to them so that info may be out of date, but you should be sure of it before spending any money. |
| Also, what are the TA31 models all calibrated for? When viewing the TA01 and TA31 they both look like they mount on the carry handle. The TA01NSN looks like the only optic designed for the flat top, which is what I want. If TA01NSN is the only one calibrated for flat top, I'm still unsure if I want it because the lack of BAC. Any input would be apprieciated. |
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The TA31rcoM4 is for the M4 14.5" flat top with BAC. There is an A4 model too and it is for the 20" flat top. They are calibrated for 62gr but I use XM193 and the BDC works fine. I just bought the TA31rcoM4 from Special Ops Tac he has the TA01nsn for $925 and the TA31RCOM4 for $1025 and that is shipped to your door. When I ordered mine I had it in 2 days. The owners name is Ray and if you talk to him tell him Dennis sent you. Good luck |
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Munition, here's some essential reading about various ACOGs and what applications each model is designed for. Very informative! ar15.com/forums/topic.html?b=3&f=18&t=229420 |
BAC is - in short - the ability to use your ACOG as a red-dot type CQB optic as well as a 4x scope... It is restricted to the TA31 models, of which the chevron is the most precise.... You get a nice, precise /\ for a reticle, and you can use it both-eyes-open for close-range, or normally for 4x at further ranges... |
The 3.5X TA11 and 5.5X TA55 models also have the BAC. I bought the TA11F bacause I wanted the longer eye relief. (2.4" vs 1.5" for the 4X models) For info on what each AGOG BDC is set for, consult the following thread: ar15.com/forums/topic.html?b=3&f=18&t=229420 |
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The posters above are pretty well informed and offer good advice If I were you - and I was before I bought my ACOG - I would do more research before dropping $1,000+ on a scope I contacted Trijicon who were incredibly helpful and explained all I wanted to know Plus I called Mike at csgunworks.com. He is as knowlegeable about these optics as anyone and more than helpful with the unitiniated as for BAC? Click here and then select the BAC Flash Demo They are hard to get used to for CQB, but are the overall best bet for all purpose optics on the AR16/M16 platform (0-300yds.) |
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