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Posted: 1/7/2012 1:09:37 AM EDT
| The TA31A is cataloged for the carry handle. The F is cataloged for the flat top. DUH! Can the A be mounted to a flat top upper ? Can a FT mount be purchased for the A model and will the calibrations be the same? The catalog leads me to believe that the " F " ACOG is specially calibrated to a flat top......? |
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The "ACOG Gospel" is the best place to start. I use one on the m16A4 clone.
ETA: Using XM193 or similar with a MV of 3250 FPS (from a 20" barrel) a 65 yard zero with keep you within moa of the BDC out to 400 meters in my experience. If I have to shoot past 400 meters, I'll get a different rifle. I have never been able to find an acceptable 62 gr load for the TA31A unfortunately. |
I have a TA31A on a LaRue LT681 RCO mounted on the flat top of my Colt LE6920. You can use most any flat top mount with the TA31A, including the Trijicon TA51 and the LaRue LT100 and LT681 mounts. I've never used the BDC because all the ranges within 30 miles of my house are 100 yard ranges.
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Quoted:
My question to you is, why didn't you get a TA31F which states in the catalog it is for a " flat top " ? Is the " A " & the " F " just model numbers for the different supplied mounts? I got the TA31A because (1) at the time I got it over three years ago it as on sale for $350 less than the TA31F; and (2) since I never intended to use it at distances over 100 yards, the difference in the BDC was not a factor for me. |
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