Swapping uppers?
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Old 07-11-2012, 08:49 PM   #1
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Default Swapping uppers?

So I am in the process of building my first AR gonna go with a BCM. I also want something with a little more punch than a 5.56 for hunting whitetail. So the question is can I buy a larger caliber upper and it be compatible with my 5.56 lower? I just dont want to throw out any more cash than what I have to. Thanks for the input I am clueless when it comes to AR's other than 5.56.

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Old 07-11-2012, 08:57 PM   #2
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Quote:
Originally Posted by powell0892
So I am in the process of building my first AR gonna go with a BCM. I also want something with a little more punch than a 5.56 for hunting whitetail. So the question is can I buy a larger caliber upper and it be compatible with my 5.56 lower? I just dont want to throw out any more cash than what I have to. Thanks for the input I am clueless when it comes to AR's other than 5.56.
If its a compatible caliber. (rhetorical I know). For instance .308, No. That round has to be ar10 platform . 300 blackout, 6.8, etc. yes.
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Old 07-11-2012, 09:02 PM   #3
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So what are compatible calibers? Or a better question what would you guys do? I dont want to have to pay an arm and leg for a random low production caliber.

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Old 07-11-2012, 09:58 PM   #4
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Well you have to decide on the caliber you want then see if it makes any sense buying it in an AR upper. This could be a case where a complete 30-30 lever action rifle makes more sense. Or a value priced bolt action in .308 or 30-06. These rounds are very common and easy to find.

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Old 07-11-2012, 10:12 PM   #5
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Well you have to decide on the caliber you want then see if it makes any sense buying it in an AR upper. This could be a case where a complete 30-30 lever action rifle makes more sense. Or a value priced bolt action in .308 or 30-06. These rounds are very common and easy to find.
Well I have a wetherby mark v 7mm-08 just thought it would be fun to have a bigger ar but the more I look and learn I don't really see a caliber I much care about having.
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Old 07-11-2012, 10:14 PM   #6
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Biggest it gets and still be semi auto on a standard ar15 format is 458socom which at its best hits the extreme low end of 45-70 in power.

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Old 07-11-2012, 10:18 PM   #7
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Biggest it gets and still be semi auto on a standard ar15 format is 458socom which at its best hits the extreme low end of 45-70 in power.
Dont forget the .50 beowolf either , the .458 socom has alot better choices for ammo though.

if you really wanted to get crazy you could always buy a .50 bmg single shot bolt action upper to put on your AR lower . then you wouldnt have to take it to have it processed it would be hamburger after the shot
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Old 07-11-2012, 10:22 PM   #8
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Originally Posted by purehavoc

Dont forget the .50 beowolf either , the .458 socom has alot better choices for ammo though.

if you really wanted to get crazy you could always buy a .50 bmg single shot bolt action upper to put on your AR lower . then you wouldnt have to take it to have it processed it would be hamburger after the shot
I saw a semi auto 50 bmg upper where the magazine fed from the side but as always it was lots of $$$$$$$
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Old 07-11-2012, 10:28 PM   #9
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Quote:
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Biggest it gets and still be semi auto on a standard ar15 format is 458socom which at its best hits the extreme low end of 45-70 in power.
What do you mean by 45-70 in power?
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Old 07-11-2012, 10:30 PM   #10
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Originally Posted by tacticalfun View Post
I saw a semi auto 50 bmg upper where the magazine fed from the side but as always it was lots of $$$$$$$
If I recall right that is a side feed for a belt .50 . but I could be wrong there are so many damn manufacturers out there anythings possible

Edit , I did find a side feed magazine upper for a bolt action .50 bmg

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