Author Topic: Convert RM380 to 9mm?  (Read 581 times)

Offline FoundFather

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Convert RM380 to 9mm?
« on: February 10, 2022, 10:57:50 PM »
The Remington RM380, as most of you know, was Remington's version of the Rohrbaugh R380, which as probably everyone knows, was a rechambering of the Rhohrbaugh R9.  This begs the question: is it possible to go the other direction, and "upconvert" a RM380 to 9mm?  Is it safe?  Has anyone done it?  What parts would be needed?

Why bother, you might ask?  The short answer is that there are a whole lot more RM380's around than there are R9's.  The long answer is, well, long......

Offline ECR

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Re: Convert RM380 to 9mm?
« Reply #1 on: February 13, 2022, 10:04:53 PM »
      The conversion would require:

      • .380 Barrel
      • .380 Slide with .380 Extractor
      • .380 Ejector
      • .380 Outer Recoil Spring
      • .380 Magazine
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Online tracker

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Re: Convert RM380 to 9mm?
« Reply #2 on: February 14, 2022, 09:27:25 AM »
I think that he means 9mm on the above parts.

Offline MRC

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Re: Convert RM380 to 9mm?
« Reply #3 on: February 14, 2022, 11:54:43 AM »
It won't work.

Remington advised against 380 +P ammo in theri RM380.  I know a guy who's RM380 had the frame crack with normal ammo.

Offline ECR

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Re: Convert RM380 to 9mm?
« Reply #4 on: February 14, 2022, 04:19:19 PM »
I think that he means 9mm on the above parts.

How did I miss that conversion!?  LOL

Yes, I meant the other way around. 

Good catch Tracker!  Ha haa . . . . . .  Ah, you guys knew what I meant anyway.

ecr
Makers of the NRA Shooting Illustrated: "Handgun of the Year for 2005" and receiver of an NRA Golden Bullseye Award.

Offline FoundFather

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Re: Convert RM380 to 9mm?
« Reply #5 on: February 14, 2022, 05:07:56 PM »
It won't work.

Remington advised against 380 +P ammo in theri RM380.  I know a guy who's RM380 had the frame crack with normal ammo.

Thanks.  I guess they used a cheaper allow than Rohrbaugh did.  Thanks to everyone who indulged me on this.  Probably not the brightest idea to begin with.

Offline ECR

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Re: Convert RM380 to 9mm?
« Reply #6 on: February 17, 2022, 06:39:57 PM »
I believe the RM380 frame is poured into a mold. We used 7075-T651 aircraft-grade aluminum billets and C.N.C. cut the frames.
They were much stronger than the Remington version, but then again, our R9 was around $1,200 a copy and the RM380 was around $275. . . . . A huge difference!
Makers of the NRA Shooting Illustrated: "Handgun of the Year for 2005" and receiver of an NRA Golden Bullseye Award.

Offline FoundFather

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Re: Convert RM380 to 9mm?
« Reply #7 on: February 17, 2022, 11:30:01 PM »
Thanks, Eric!  I completely overlooked who was posting.  Nothing like hearing from the guy whose names is on the gun!

Offline ECR

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Re: Convert RM380 to 9mm?
« Reply #8 on: February 18, 2022, 07:06:47 PM »
Thanks, Eric!  I completely overlooked who was posting.  Nothing like hearing from the guy whose name is on the gun!

Thank you!
Makers of the NRA Shooting Illustrated: "Handgun of the Year for 2005" and receiver of an NRA Golden Bullseye Award.