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Will this fit snug on a gen 3 lower? — 1 Answer

by Craig, from FL, United States Asked on November 22, 2022

Name Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver (4.4)
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Answered by Aero Precision USA, Manufacturer from WA, United States, on December 15, 2022

The M5 platform is built to the AR308 pattern, with a DPMS High Profile (.210) Tang rail and 1-7/16 x 16 TPI. Please be advised that Aero Precision .308 products are machined to AR .308 specs, which is similar but not the same as DPMS Gen 1. Unfortunately, because there is no set standard, Aero Precision is unable to guarantee compatibility with any other manufacturer’s products within this platform.

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