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How to put a MS on 365

1623 Views 21 Replies 16 Participants Last post by sharpe, Jun 6, 2022

Randyc

Discussion Starter · May 27, 2022

I bought a non safety 365 and after I bought it I kind of wish I had gotten the one with a MS. I took the unfired new gun to my LGS to see if I could trade it in on one with a MS. They offered to buy my 365 for $300 and sell me one with a MS for $550. So I said thanks anyways but I’ll keep my 365.

I have since learned that you can convert a non MS to one with a MS.
Has anyone here ever done this? If so, how difficult was it and how much did it cost? Where do you buy the kit? Is this something I could do myself or would I need to get someone else to do it? I don’t want to damage my gun.

thanks

1 - 20 of 22 Posts

BoBo522

· #2 · May 27, 2022

You made the right call! It's pretty easy to add the safety - lots of YouTube videos on the subject, and tons of threads here on SigTalk. Do a search for posts containing "p365 manual safety kit" and you'll get hundreds of hits. I've converted three of my five P365s, and I have no mechanical aptitude whatsoever.

BarbarianCBX

· #3 · May 27, 2022

Welcome. Ping Osage County Guns website.

Shop for Firearms and Accessories at Osage County Guns

Shop for Firearms and Accessories at Osage County Guns

Osage County Guns is one of the largest gun stores in Missouri and one of the largest Sig Sauer dealers in the US!

osagecountyguns.com

Here's their instructions video.

Sent from my SM-G955U using Tapatalk

Reactions: 2

Reiverman

· #4 · May 27, 2022

I converted my P365XL and love it

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Taskotzke59

· #5 · May 27, 2022

Yes , I’ve done it. You will need the kit. It consists of the detent, spring and the manual safety. Super easy. Use a Dremel to notch the grip module where the safety resides.

Reactions: 1

rmfnla

· #6 · May 27, 2022

Easy to do. There are lots of threads on this here; do a search.

Two thoughts:

You may not want an ambidextrous safety. I didn't, so I cut off the right-side lever and only notched the left side of the frame. The result is better than OEM, IMHO. Again, do a search because there is a right way and wrong way to cut the lever.

Also, check your frame before cutting. Mine came with the notch area molded in, so rather than use a dremel to cut I just snipped the sides with small cutters and then broke out the insert; super clean and almost no possibility for error.

Nickp

· #7 · May 27, 2022

If you don't feel comfortable cutting out the notch for the MS in the frame, buy another frame that already has the MS notch. The rest is as noted above in other posts...good luck...enjoy your 365...I do both of mine.

Taskotzke59

· #8 · May 27, 2022

I used a template I found on eBay to cut the notch. You can buy one for the 320 as well. I have both.

Taskotzke59

· #9 · May 27, 2022

This.

Air gun Wood Shotgun Trigger Gun barrel

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24/7/365

· #10 · May 27, 2022

OP,

Super easy install.

I've done it on two different pistols.

You'll either need to cut the MS cutout into you current grip, I did it with an Exacto knife.

Or simply buy a replacement grip in the color and/or size you prefer. A great chance to custom your gun.

As others have said, the youtube install videos make it clear and easy...

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BitOfANoob

· #11 · May 28, 2022

Randyc said:
I bought a non safety 365 and after I bought it I kind of wish I had gotten the one with a MS. I took the unfired new gun to my LGS to see if I could trade it in on one with a MS. They offered to buy my 365 for $300 and sell me one with a MS for $550. So I said thanks anyways but I’ll keep my 365.

I have since learned that you can convert a non MS to one with a MS.
Has anyone here ever done this? If so, how difficult was it and how much did it cost? Where do you buy the kit? Is this something I could do myself or would I need to get someone else to do it? I don’t want to damage my gun.

thanks

Pretty easy install. Just don't mess with the take down lever and slide release or shake the FCU around while you have it out of the grip module. The grip module is a retention device that keeps pieces of the FCU from coming out of place in normal use.

Randyc

Discussion Starter · #12 · May 28, 2022

Thanks guys! Exactly what I needed.

Reactions: 1

Rockwell15200

· #13 · May 29, 2022

No need for a template, there is an outline already imprinted on the module. Stay within the line and you will be fine, also the pointy end of the detent goes into/inside the spring, insert spring then detent with pointy tip push spring in its channel.

gwes351

· #14 · May 30, 2022

As said by others above, the conversion is pretty simple and there are good videos showing it step-by-step. I did convert 1 of my 365s with the parts kit and a MS grip module (costs under $60 shipped as I recall). I bought the MS grip as I didn;t want to cutout my original grip in case I wanted to convert back. So, I converted to try it out, check fit with existing holsters, function check it etc). In my case, I converted the 365 back to non MS, because:

the installed MS was very stiff - difficult to consistently engage and dis-engage (and I have large guy hands). Difficult enough I re-installed it several times to insure proper fit (install was correct). And I flipped it off/on over 200 times watching TV - little difference (was well lubed)
personally, not a fan of MS - but wanted to try it. Just not for me as I've spent lots of time training without a MS (on my 365s, glocks, HKs, CZs etc).

I would also suggest your conversion approach be consistent with your technical capabilities. If you are an experienced DIY-er with an extensive workbench - then go for it. If not so much, then consider buying the pre-cut grip module for example. If you add the MS, I also suggest you train with it religiously. Enjoy your new sig

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Reactions: 2

Amigo

· #15 · May 30, 2022

Thanks for the info. I’m not real comfortable carrying my 365XL without a safety. I might add one.

Reactions: 1

Sig007

· #16 · May 30, 2022

Amigo said:
Thanks for the info. I’m not real comfortable carrying my 365XL without a safety. I might add one.

Same here .. never carry any without MS..

tirod

· #17 · May 30, 2022

I bought the Osage 3d printed guide to cut the original grip unit then discovered the marking on the inside. I used a file - Dremels are not recommended for the inexperienced. It's like trying to use a gas powered drill driver - it takes a lot of finesse.

X2 on the "handle bare FCU with care" as I discovered two ways to shake parts loose while not even trying. The first won't let the slide halfway on - that is the takedown lever spring popping out - the 2d is the slide not quite getting past the sear - that is the trigger strut disconnecting underneath the sear. As said, the grip unit is the third hand holding all those parts in place on the 365, unlike the 320/M17 which the armorer was intended to kit to the soldier.

sharpe

· #18 · May 31, 2022

I just took my pistol apart; it doesn't look like there's any marking on the inside on it. Wonder if they're not doing that anymore.

Reactions: 1

tirod

· #19 · May 31, 2022

Its faint as it appears as a mold line where an insert was placed to make a Non MS.

Why SIG used a square notch to clear the round safety shaft is more production and fabrication oriented. With the safety installed you can try fit the grip and slowly file it down until it clears. Osage still carries the 3D printed jig which pins into the grip making it easy - remove material on one or both sides, stop when you get to the jig.

osagecountyguns.com

OCG P365 Manual Safety Grip Jig

OCG P365 Manual Safety Grip Jig

osagecountyguns.com

sharpe

· #20 · May 31, 2022

It actually looks like there are very faint lines on the outside of the grip on mine. I like the idea of installing the safety and then filing until it clears.

Reactions: 1

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