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Old 09-06-2013, 09:54 PM   #1
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Default Commercial to Mil Spec Buffer Tube

Can you swap out a commercial tube for a mil spec or are lower receivers made to accept either one or the other?



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Old 09-06-2013, 09:57 PM   #2
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Ya, but then you will need to replace the stock as well
Same thread pitch. Mil-spec receiver extensions have more complete threads. Whole peaks and valleys of the threads. Commercial receiver extensions have the tops of the peaks milled off.



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Old 09-06-2013, 10:04 PM   #3
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Quote:
Originally Posted by Anna_Purna
Ya, but then you will need to replace the stock as well
Yup. That's the idea. Got a good deal on a used STR but its mil spec. Now I have to get a new buffer tube. Can I use the same spring and buffer?
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Old 09-06-2013, 10:08 PM   #4
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the buffer and spring will work in both

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Old 09-06-2013, 10:10 PM   #5
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Thanks. That's all good info.

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Old 09-06-2013, 10:11 PM   #6
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We need pics once you have the new stock on, or else!

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Old 09-06-2013, 11:35 PM   #7
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Haha. Will do. Should look like every other ar with an STR on the back end. There may be many like it. But this one is mine!



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