Swapping uppers?

Discussion in 'AR-15 Discussion' started by powell0892, Jul 11, 2012.

  1. powell0892

    powell0892 New Member

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    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.
     
  2. broke-again124

    broke-again124 New Member

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    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.
     

  3. powell0892

    powell0892 New Member

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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.
     
  4. Quentin

    Quentin New Member

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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.
     
  5. powell0892

    powell0892 New Member

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    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.
     
  6. JonM

    JonM Moderator

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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.
     
  7. purehavoc

    purehavoc New Member

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    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 :D
     
  8. tacticalfun

    tacticalfun Active Member

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    I saw a semi auto 50 bmg upper where the magazine fed from the side but as always it was lots of $$$$$$$
     
  9. broke-again124

    broke-again124 New Member

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    What do you mean by 45-70 in power?
     
  10. purehavoc

    purehavoc New Member

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    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

    [​IMG]
     
    Last edited: Jul 11, 2012
  11. JonM

    JonM Moderator

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    low end 45-70 shoots a 350 grain bullet at roughly 1800fps high end 458socom shoots that same bullet around 1500fps very close but not quite. the disparity grows as bullet weight increases.

    reason i didnt mention 50 beo is it uses pistol bullets which arent very good for hunting purposes. the socom can use bullets designed for african dangerous game and everything on down the line.
     
  12. powell0892

    powell0892 New Member

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    So swapping up directions for how to go about this now that I don't think I want another upper...is there any way to swap out my vortex sparc with a rifle scope on my ar and keep them zeroed? Would a larue mount work or is it impractical?
     
  13. broke-again124

    broke-again124 New Member

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    Understood.