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Can I put a rifle length upper on a carbine lower


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#1 OFFLINE   hairy trigger

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Posted Mar. 26 2013 - 11:11 AM

When I first bought my AR it had a 20" SS bull barrel and a regular A2 butt stock. I changed the 20" to an 18" rifle barrel and then later changed everything over to a 16" carbine length barrel and a 6 position butt stock. Now I am not satified with the accuracy that the 16" Anderson M4 barrel is giving and would like to just get another upper receiver and install the 18" DPMS barrel so forth and just swap uppers when I wanted the better accurate setup. I know the best thing would be to buy another lower and make a complete rifle which I plan on doing some day but I thought that I had read somewhere on the forum that you could not use a rifle length gas system with a carbine length stock setup but I may not have. Could I just change the uppers without changing the stocks recoil systems evertime? Thanks.




#2 OFFLINE   redbarron06

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Posted Mar. 26 2013 - 11:15 AM

Yes, I swap between a 20" and a 10.5" all the time.




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#3 OFFLINE   xOutxKastx

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Posted Mar. 26 2013 - 11:17 AM

Yes you can change to any length barreled upper on your current lower.   When you went from the A2 stock to collapsible stock you had changed out the buffer, buffer tube, buffer springs.




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#4 OFFLINE   Mindfield

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Posted Mar. 26 2013 - 11:41 AM

yes, my favorite rifle is a 20" on a lower with a carbine stock




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#5 OFFLINE   vic_b

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Posted Mar. 26 2013 - 12:00 PM

Sure, why not?




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#6 OFFLINE   hairy trigger

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Posted Mar. 26 2013 - 03:01 PM

Sure, why not?

I just thought that there may be a problem by using different springs and buffer tubes between them, ie: rifle gas system & rifle buffer tube, carbine gas tube & carbine spring and buffer tube. Its just takes a few seconds to ask someone that knows instead of trying something  that your not sure about and ruining a nice weapon. Thanks guys!




#7 OFFLINE   SepsiS

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Posted Mar. 26 2013 - 03:09 PM

I just thought that there may be a problem by using different springs and buffer tubes between them, ie: rifle gas system & rifle buffer tube, carbine gas tube & carbine spring and buffer tube. Its just takes a few seconds to ask someone that knows instead of trying something  that your not sure about and ruining a nice weapon. Thanks guys!

 

 

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#8 OFFLINE   RIGGLER

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Posted Mar. 30 2013 - 04:41 PM

I had the same question. Just to confirm: I can change out my A2 stock to a carbine length one, while keeping my 20" barrel set up, I just need to change the buffer and buffer spring with the new stock, correct? Also, its a heavy barrel Colt, should I use a heavier buffer also?




#9 OFFLINE   dupa220

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Posted Mar. 30 2013 - 04:46 PM

I had the same question. Just to confirm: I can change out my A2 stock to a carbine length one, while keeping my 20" barrel set up, I just need to change the buffer and buffer spring with the new stock, correct? Also, its a heavy barrel Colt, should I use a heavier buffer also?

You can do that, but why would you want to? It's a good idea with 16" and shorter Barrels, but when you get into 20" + AND Heavy barrel, your going to change your Balance point. You'll be getting Muzzle heavy.




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#10 OFFLINE   RIGGLER

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Posted Mar. 30 2013 - 06:07 PM

You can do that, but why would you want to? It's a good idea with 16" and shorter Barrels, but when you get into 20" + AND Heavy barrel, your going to change your Balance point. You'll be getting Muzzle heavy.

That's a good point. It's already muzzle heavy I think. I just feel like the A2 stock may be a bit long for me but maybe I'm just used to getting my nose up to the charging handle on carbine length AR's. I can't do that easily on this but maybe I don't need to for a target gun. 




#11 OFFLINE   peabody

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Posted Aug. 07 2013 - 12:42 PM

i really like a 20" pencil barrel on a carbean lower...
stick an H2 or H3 buffer in there .. its wonderfull...:)

Edited by peabody, Aug. 10 2013 - 12:00 AM.



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#12 OFFLINE   Mindfield

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Posted Aug. 10 2013 - 08:50 PM

Mine has an H Buffer and a heavier MagPul stock. It handles amazingly, almost no recoil. I love it




#13 OFFLINE   peabody

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Posted Aug. 12 2013 - 09:17 PM

i really need to emphases ..on the PENCIL BARREL...
lighter than an M4 barrel..rifle gas.. and added advantage of higher velocities.
with the carbine stock.. she's pretty slick.


#14 OFFLINE   rifleman2000

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Posted Aug. 13 2013 - 09:22 AM

The Canadian C7A2 rifle (standard military issue) is a 20" barrel rifle gas system with collapsible carbine stock.




#15 OFFLINE   peabody

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Posted Aug. 13 2013 - 08:53 PM

i like the old A1/C7 ... they look funky ... and it grows on ya..i like em better and better the older i get.

Edited by peabody, Aug. 13 2013 - 08:56 PM.



#16 OFFLINE   peabody

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Posted Aug. 13 2013 - 09:04 PM

if i remember right...
model one sales .. built one with triangular handguards..and carbean stock.

makes me want to have a bunch of lowers with different stocks...
wait a minute !!!
lower with ACE stock....check
lower with carbean stock ....check
lower with A2 stock....check
lower with A1 stock...check

looks like im set !

I'v e several uppers..all sizes...if i ever get home...
looks like I'll be havin some fun in the backyard !.... :) :) :)





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