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AR15.COM
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12/4/2015 1:04:56 PM EDT
I just bought a Zenit b33 top cover for my slr 106cr I know it comes with a whole new recoil spring is this a different weight than the 556 one can I use it or should I just put my spring on their button
12/13/2015 9:16:33 AM EDT
[#1]
I used the B33 spring on my SGL31




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