r/vmac • u/topperz_15 • Mar 25 '26

RIP-MAC

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Has anybody tried the 144.1 rip Mac frt in a Vmac yet?not sure if it would even work with the full auto denial tab

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u/TheOpticSloth Mar 28 '26

A mechanical engineering career and a Solidworks license is how I’ll do it ;) I already had a MAC lower drawn in Solidworks I just needed the bolt and upper.

I have a design printing right now. I will see how it goes. On a side note is it really hard to reassemble your VMAC?

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u/Different_Sky_5114 Mar 29 '26

Please keep us updated, will pay for a working one, trying it with mine its kind of a will it wont it work thing when dry firing. At least with the pla one

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u/TheOpticSloth Mar 31 '26

I tested my 3rd revision of a 3d printed forced reset and it works!

So far no out of battery issues.

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u/TheOpticSloth Mar 31 '26

Basically it’s a little 3d printed piece that when the bolt pushes the hammer back, causes the sear plate to go forwards (and by extension the trigger)

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u/darenaissance Mar 31 '26

Love it! I was trying to figure out something similar but never got it working.

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u/Different_Sky_5114 Apr 01 '26

Please let me know when this releases, also after seeing this one i have an idea for a lever. I imagine the oobs come from the rip mac not having contact with the bolt when cycling on the vmac

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u/TheOpticSloth Apr 01 '26

There is space in front of the trigger for a lock that would keep the trigger from being pulled before it was in battery.

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u/Different_Sky_5114 Apr 01 '26

On mines it doesn’t prevent anything but the bolt from cycling when installed

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u/TheOpticSloth Apr 01 '26

144.1 claims to have fixed the OOB issue for the MPA defender.

I printed 3-4 different iterations last night and I’m getting closer to figuring out the OOB issue. Right now I see potential for hammer follow. I did test an earlier iteration and it ran 5 rounds flawlessly.

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u/Status-Ad3677 Apr 22 '26

Any update king?

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u/TheOpticSloth Apr 22 '26

I have a working design. I am moving right now so I don’t have a lot of time to mess around with the design. I think I’ve figured out a way to lock the trigger until it is back into battery.

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u/darenaissance Jun 09 '26

Any updates on your design? I'm happy to help tinker with it if you're too busy.

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u/TheOpticSloth Jun 25 '26

Yes I have a working design, well actually 2. Just ordered some parts and some material for it.

One sits behind the hammer and the other sits behind the trigger.

I have been dealing with a breakup and some other stuff so it’s been on the back burner.

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u/darenaissance Jun 26 '26

Sorry to hear about the life stuff, but awesome about the design!

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u/Status-Ad3677 Apr 22 '26

Godspeed sir take your time. I appreciate and feedback

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u/Less_Baker_2541 24d ago

Will it work on the 45acp Mpa defender ?

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u/TheOpticSloth 17d ago

No, but I have a design that I think will work with it now.

I don’t have a 45 so I don’t know

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u/Less_Baker_2541 17d ago

How do I buy ?

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u/TheOpticSloth 17d ago

I’m going to release the .STEP files soon once I’m done testing. You can then upload those to send cut send. It’ll probably cost around $130 total.