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Old 08-24-2011, 02:34 PM   #11
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1:9 may work "fine" but 1:7 will work better for your typical AR user who uses 55gr and up. Why pigeon hole yourself into light/short loads w/ 1:9? Are you really going to be putting anything lighter than 55 through you firearm? To be honest I highly doubt it from my experience.

You mentioned target practice. 1:7 will prove better w/ the higher grain ammunition which is better for target shooting. There's a reason most of your higher quality rifles come w/ 1:7 barrels.

As far as in between 1:8 is in good between and often used in stainless barrels that tend to be made for greater accuracy. To me thats a big clue.

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Old 08-24-2011, 02:34 PM   #12
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I understood the following, from a gun shop, regarding AR15 M4s he had for sale:
Bush Master, cheaper but you couldn't shoot .223s only 5.56, no higher grain bullets.
Colt Law Enforcement/Military .223 and 5.56 and higher grain bullets.
I understood they both were the same rate of twist.

Please clarify.
tks

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Old 08-24-2011, 02:41 PM   #13
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IMO run like hell from the BM.

What was the price on the Colt?

From my understanding if your rifle is chambered in 5.56 you can also fire .223 but not vise versa. Is the BM chambered in .223 or 5.56?

Id be willing to bet the Colt was 1:7 twist. Sounds like the BM is 1:9

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Old 08-24-2011, 02:51 PM   #14
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The Colt was $1300.00 including sling, cleaning kit and 20rnd clip.
The BM was in the $800s.

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Old 08-24-2011, 02:58 PM   #15
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Just by playing averages the Colt w/ sling and magazine are probably closer in value to the asking price. What model Colt? You can find 6920's for closer to $1k, add shipping and FFL and you're still saving yourself some money.

For $800 you can do much much better.

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Old 08-24-2011, 03:00 PM   #16
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Colt "Law Enforcement/Military". Said they wouldn't be manufactured any more.
Well, with the help of this forum and my research I think I can do much better.
Thanks so much for the help.

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Old 08-24-2011, 04:35 PM   #17
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Colt did/ is going to stop production of the LE/Mil marked lowers. The lowers were used on different models.

I still think the PSA would serve you well and save you a little money for an optic and ammunition.

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