Author Topic: Castle nut  (Read 2595 times)

Bailey0117

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Castle nut
« on: December 28, 2012, 04:22:37 PM »
Can anyone tell me if I need to change my castle nut if I change from a commercial extension tube to a mil-spec tube?

billt

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Re: Castle nut
« Reply #1 on: December 28, 2012, 05:25:37 PM »
http://www.ar15fornoobs.com/mil-spec-vs-commercial-spec-buffer-tubes

This helps explain it. The thread size is the same because the lowers are all threaded the same to accept them. The size difference is in the tube itself where it accepts the stock. You must have a Commercial stock to fit a commercial buffer tube, and Mil-Spec for a Mil-Spec tube.

twyacht

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Re: Castle nut
« Reply #2 on: December 29, 2012, 05:50:29 AM »
What billt posted is correct here's just the diff.



The castle nut is the same. But have the stock match the tube. That is the difference.

Thomas Jefferson: The strongest reason for the people to keep and bear arms is, as a last resort, to protect themselves against the tyranny of government. That is why our masters in Washington are so anxious to disarm us. They are not afraid of criminals. They are afraid of a populace which cannot be subdued by tyrants."
Col. Jeff Cooper.

Bailey0117

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Re: Castle nut
« Reply #3 on: December 29, 2012, 02:42:38 PM »
Thanks.   Just wanted to make sure I ordered all the parts I need at the same time

tombogan03884

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Re: Castle nut
« Reply #4 on: December 29, 2012, 06:41:02 PM »
Make sure you get the Carbine specific spring and buffer as well .
The rifle size of either will not work.
Trust me on this.

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Re: Castle nut
« Reply #5 on: Today at 06:37:05 PM »

 

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