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Just wanting to confirm in the 320 series pistols only the M17 and M18 models possess safety's.

Thanks
 

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Fairly certain that one is discontinued SigMHS. The only way to get a new one with a manual safety now is via M17/18. I'm hoping when they start selling the FCUs there will be a manual safety model available.
 

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Sig's website indicates some p320s and the m17/m18 are available with or without manual safeties:



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I think that currently M17 and M18 is all you can find with a safety, but there were other models in the past, and there may be again.

I have an X-Compact with a safety, which is actually an M17 FCU with an X-Compact grip and slide, and a notch cut into the grip for the safety.
 

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The p320 Compact in 9mm is available with or without MS, here's the SKU# for the MS equipped version which is also the IL/ CO / CT / HI / MA / MD / NJ / NY compliant 10 round mags model:

320C-9-BSS-MS-MA
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The p320 Compact in 9mm is available with or without MS, here's the SKU# for the MS equipped version which is also the IL, CA, MA, NY, NJ compliant 10 round mags model:

320C-9-BSS-MS-MA
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"-MA" models also come with a 10 lb min trigger pull weight.
 

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"-MA" models also come with a 10 lb min trigger pull weight.
I have such a version. I didn't realize that was one of the stipulations. I kind of thought my trigger pull was a bit "heavy". I just bought a Sig flat trigger, which may help out leverage wise, but that won't even get me to what the factory standard must feel like! I didn't want to have to do the whole trigger bar thing, but maybe I will have to.

What makes these MA compliant trigger pulls so heavy?

Edit: I just noticed that Apex doesn't make their trigger bars for manual safety p320s.....and it was only like a 10% reduction in pull anyway, so oh well
 

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Easy enough to fix if you want a certain pistol that doesn't come w/a MS.
Buy a FCU with the MS on it without major revisions. The 320 FCU cannot be retrofitted
Not worth the effort.
 

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I recently modified my P320 Compact RX for a Manual Safety.

To do so...
I purchased a M17 Manual Safety Stripped Frame..$49.99.

They were available at Sig Sauer Parts.com just a day or so ago....They are now Out of Stock.
* You could put in a Notify you when it is back In Stock.

https://sigsauerparts.com/sig-sauer-p320-stripped-manual-safety-fcu-m17-prefix/

Sig Sauer Parts also has the Manual Safety Parts for $94.00 "In Stock"

https://sigsauerparts.com/sig-sauer-p320-manual-safety-parts-kit/

Put the 2 together and the cost is $143.99 + Shipping.

I purchased a punch set at Harbor Freight.

https://www.harborfreight.com/8-piece-punch-set-93424.html

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First I disassembled my Compact RX FCU and set the parts aside.
Then using the video below I assembling my M17 Manual Safety FCU Frame.

Following along with the video I did each Step 1 by 1 pausing the Video as I went along.


Taking my time it went rather well and it took me about 30 minutes.
_________________________________________________

I then used the Template in this Video to notch out the Manual Safety Cut into my X-Compact Grip..


Here is the End Result.

P320 X-Compact RX Manual Safety PRO 1B.jpg P320 X-Compact RX Manual Safety PRO 3.jpg

* Then I added a Wilson Combat Carry (3.9" Slide) with Manual Safety Cutout Grip.
https://shopwilsoncombat.com/Grip-Module-WCP320-Carry-Manual-Safety-Tan/productinfo/320%2DCMT/

* I put a Talon PRO X-Carry Grip onto my WCG.
https://talongungrips.com/gun-grips/pistol-grips/sig-sauer/p320-x-five-x-carry-x-vtac/

WCG PRO 02.jpg WCG PRO 03.jpg

So there you have it..
Everything that you should need to know to add a Manual Safety to a P320..
All in all it was a rather easy modification....and compared to what people spend on aftermarket parts and modifications was in my opinion rather reasonable.
 
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