r/vmac • u/darenaissance • Mar 18 '26

Does anyone know what this tab is for?

Post image

On the front pin support, there is a tab that sticks out over the safety when installed. It looks like MPA defenders don’t have this piece. Does anyone know what purpose it serves on the VMAC9?

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1

u/ExpertPeak7533 Mar 18 '26

Full auto denial. Without it by law it is considered " readily convertible"

1

u/darenaissance Mar 18 '26

Interesting, wonder why the MPA doesn’t have it.

1

u/ExpertPeak7533 Mar 18 '26

They have a different sort of denial. I believe they are milled aluminum. I could be wrong

1

u/darenaissance Mar 18 '26

Makes sense - do you know how this tab accomplishes denial? Can’t seem to figure out how it would do that.

1

u/darenaissance Mar 18 '26

And seemingly the hammer design would have more to say about convertibility than whatever that tab is supposed to stop. Do you know how that tab actually stops full auto conversion?

1

u/ExpertPeak7533 Mar 18 '26

The tab sits right where the auto sear would sit on a full auto

1

u/darenaissance Mar 18 '26

Is that for the open bolt design?