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AR15.COM
4/30/2026 1:49:59 PM EDT
I’ve gotten a few sets of these over the years and swear they used to be marketed as 7075-T6 aluminum (like the Precision Matched Rings).  It’s what drew me towards them; 7075AL, recoil lug, Torx hardware, under $100.  Several other sites selling them still even reference the old 7075-T6 material.

Now the website lists them at “6061 Aluminum”…

When did the switch to 6061 happen?

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