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11/14/2008 10:11:55 AM EDT
I am thinking about swapping out my Magpul CTR commercial stock that came on my RRA for a Magpul UBR when they become available.

My question is, will I need a new buffer tube and spring to do this, or will the UBR just bolt on with my existing hardware?

Thanks in advance guys! Appreciate any info. I have been told that i should watch someone else do this for the first time to learn and not screw it up, and i may do that, but just wanna make sure i have the right tools and hardware to get the job done.
11/14/2008 10:19:34 AM EDT
[#1]
The UBR comes with it's own receiver extension, you use the same action spring and buffer.
11/14/2008 10:22:13 AM EDT
[#2]
cool...thanks for the reply
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