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Posted: 3/26/2006 7:32:12 PM EDT
Can this be done without modifications? I want a .308 upper and already own a standard AR15 lower and want to know if I can combine the two.

I'm a newb so take it easy on me!

Thanks
Link Posted: 3/26/2006 7:36:47 PM EDT
Unfortunately, no. The .308 (assuming you mean .308 Winchester or 7.62 x 51 size) will not fit the STANDARD lower for the AR-15. You have, essentially, two options:
1 - purchase a platform sized for the .308, such as the AR-10, LAR-10, BAR-10, LR-308, FN-FAL, PSG-1, MSG, to name a few.
2 - The MGI (read this LINK) lower with the M14 mag, plus the MGI upper ...
Link Posted: 3/26/2006 7:37:13 PM EDT
.308 magazines and recievers are just a LITTLE bigger than .223 magazines and recievers.

Wouldnt quite work
Link Posted: 3/26/2006 7:41:09 PM EDT

Originally Posted By Lumpy196:
.308 magazines and recievers are just a LITTLE bigger than .223 magazines and recievers.

Wouldnt quite work



What if you used a rubber mallet and some CLP?
Link Posted: 3/26/2006 7:48:30 PM EDT
[Last Edit: 3/26/2006 7:49:46 PM EDT by oldgrey]
Thanks for the info. I meant to clarify with 7.62x39, sorry.
If I can't then how can DPMS sell this
www.dpmsinc.com/10Expand.asp?ProductCode=BA-A2-762

I'm a little confused now!
Link Posted: 3/26/2006 7:58:37 PM EDT

Originally Posted By oldgrey:
Thanks for the info. I meant to clarify with 7.62x39, sorry.
If I can't then how can DPMS sell this
www.dpmsinc.com/10Expand.asp?ProductCode=BA-A2-762

I'm a little confused now!



Ah, young grasshopper. the difference is in the details. The .308 we mentioned was 7.62 x 51, whereas the one you mentioned is 7.62 x 39 Two VERY DIFFERENT critters. The x 51 is the big round that is also called .308 Winchester and is what the old M14 fired. The x 39 is the smaller round of Russian heritage, which is what the AK-47 fires. The 7.62 x 39 can be fired from unmodified AR-15 lowers, you just need the proper magazines (stock .223 mags will NOT work with the larger diameter of the 7.62 x 39). That is why we asked if it was the x 51 or x 39.

Now, Lumpy and John, take a look at the MGI link. No longer is a hammer and shoe horn needed. Mack got a little busy and his modular lower will take M14 mags ... just swap out magwells and you are in business. I got to see the prototype last year and have had to walk around with my mouth shut for MONTHS until they released it at SHOT in Feb of this year.
Link Posted: 3/26/2006 8:38:17 PM EDT
[Last Edit: 3/26/2006 8:46:06 PM EDT by humzai]
I am waiting to see what you come up with for the QCB. I had been bugging Tom about them making a .308 upper and even suspected that that was what was the surprise for the Shot Show and boy was I surprised when I saw it. I can't wait to get my hands on the Mgi modular ar system, and to see what you and Tom are working on.
Link Posted: 3/28/2006 7:13:00 AM EDT
http://ar15.com/forums/topic.html?b=3&f=121&t=274179&page=1&#-1

im tryin to find out this myself,
if all else i may call dpms today and find out 100% sure
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