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Posted: 6/17/2015 8:35:39 AM EDT
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Want to buy an Acog RCO for my 14.5 inch rifle. What is the difference between these two models? https://www.trijicon.com/na_en/products/product3.php?pid=TA31RCO-M150CP https://www.trijicon.com/na_en/products/product3.php?pid=TA31RCO-M4CP One model states it is for the m150, but calibrated for a 14.5 inch barrel. The second model states it is for the M4 and M4A1 and is also calibrated for a 14.5 inch barrel. Are they not the same?  Also, where can I find the best price on one? Opticsplanet has an ok price. Id prefer t buy NIB, just as a personal preference. Thanks for any input. |
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It looks like the only difference is the scope caps are included on one.
Link to comparison. |
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If I recall correctly, the M150 is for a 20" rifle barrel, when the marines still used it. The first part of the description seems to be a cut-and-paste error from the regular TA-31 description. The second paragraph states that it was made for the marines, but the first paragraph says it was made for the army(?) the bullet drop compensator is a bit different, one for 20" and the other for 14.5" check here edit. I think I'm wrong. the "A4" model is the 20" version. I think the only difference between the two you are describing is the packaging for the army v packaging for the Marines  |
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Quoted: If I recall correctly, the M150 is for a 20" rifle barrel, when the marines still used it. The first part of the description seems to be a cut-and-paste error from the regular TA-31 description. The second paragraph states that it was made for the marines, but the first paragraph says it was made for the army(?) the bullet drop compensator is a bit different, one for 20" and the other for 14.5" check here edit. I think I'm wrong. the "A4" model is the 20" version. I think the only difference between the two you are describing is the packaging for the army v packaging for the Marines http://i24.photobucket.com/albums/c35/scooter1942/TrijiconReticles.jpg If that is the case I suppose I will go with the cheaper one (cheaper by only a few dollars). |
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Which one do you think is "better"? Quoted:
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The M150 RCO was made for the Army and uses 1/2 MOA clicks the M4 RCO was made for the Marines and early ones used 1/3 MOA clicks and later ones used cm clicks Which one do you think is "better"? It's a matter of personnel choice once zeroed there is effectively no difference between them The slightly finer adjustment on the Marine RCOs may make it a bit easier to fine tune your zero |
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It is my understanding that the RCO has horizontal stadia. Quoted:
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Why not TA31F? Pretty much the same thing but cheaper. It is my understanding that the RCO has horizontal stadia. You're not going to find a whole lot of uses for the horizontal stadia in the civilian world. |
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The main difference is the M150 scope has the parallax set for 300 meters, the adjusters are upgraded external ones, and the scope comes with attached flip-up lens covers with an embedded killflash device in the front lens cap.
Whats the normal parallax on an ACOG? I have a TA31f and I feel that its not 100% parallax free at close ranges. |
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Quoted: You're not going to find a whole lot of uses for the horizontal stadia in the civilian world. Quoted: Quoted: Quoted: Why not TA31F? Pretty much the same thing but cheaper. It is my understanding that the RCO has horizontal stadia. You're not going to find a whole lot of uses for the horizontal stadia in the civilian world. |
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The main difference is the M150 scope has the parallax set for 300 meters, the adjusters are upgraded external ones, and the scope comes with attached flip-up lens covers with an embedded killflash device in the front lens cap. Whats the normal parallax on an ACOG? I have a TA31f and I feel that its not 100% parallax free at close ranges. The M150 is basically the updated model M4RCO, that is in half minutes instead of CMs. |
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I don't have a whole lot of use for a spikes 40mm launcher... Quoted:
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Why not TA31F? Pretty much the same thing but cheaper. It is my understanding that the RCO has horizontal stadia. You're not going to find a whole lot of uses for the horizontal stadia in the civilian world. At least you can shoot smoke and other stuff with the Spike's launcher (I still wouldn't buy one). Horizontal stadia inside a scope doesn't do anything fun or cool. Your money though, just trying to give some advice. |
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At least you can shoot smoke and other stuff with the Spike's launcher (I still wouldn't buy one). Horizontal stadia inside a scope doesn't do anything fun or cool. Your money though, just trying to give some advice. Quoted:
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Why not TA31F? Pretty much the same thing but cheaper. It is my understanding that the RCO has horizontal stadia. You're not going to find a whole lot of uses for the horizontal stadia in the civilian world. At least you can shoot smoke and other stuff with the Spike's launcher (I still wouldn't buy one). Horizontal stadia inside a scope doesn't do anything fun or cool. Your money though, just trying to give some advice. They are 10 mil lines, I guess you can use them for leading the target |
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They are 10 mil lines, I guess you can use them for leading the target Quoted:
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It is my understanding that the RCO has horizontal stadia. You're not going to find a whole lot of uses for the horizontal stadia in the civilian world. At least you can shoot smoke and other stuff with the Spike's launcher (I still wouldn't buy one). Horizontal stadia inside a scope doesn't do anything fun or cool. Your money though, just trying to give some advice. They are 10 mil lines, I guess you can use them for leading the target I suppose, the graduations (10 mil and then every 5 after) seem a bit "rough" to accurately lead a moving target. ETA: Not trying to be a Debbie downer, though. It's a good scope, OP. I have had a handful of the 4x ACOG models, including an RCO-M4, and they were all great. You won't be disappointed. |
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