need some help with as design stripped lower (fosscad.io)

submitted 4 months ago by epyon@fosscad.io to c/supersafety@fosscad.io

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probably a really basic stupid question but google and reddit searches had to results. when installing the extractor on the newest lowers for the ap5... whats the 3rd screw for? is it a spare?

epyon

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joined 4 months ago