i was reading my brownells 1911 catalog and saw a barrel threading device for compensators.

1st question...
is it legal to have a compensator on a pistol?

2nd question...
could you thread a sigma barrel and use a compensator out of said magazine, it said it fits all calibers and they make 1911's in .40 s&w, so in theory, if you threaded the barrel a compensator would work, or am i stupid?

3rd question...
if 2nd question wouldnt work, how hard would it be to cut the slide and port the barrel, i see they no longer make ported barrels so i would have to fabricate it? anywhere to look for the process.

you can see by my questions what i am looking to do, so can someone point me in the right direction, or give me some tips on the process, like what size the ports would need to be, how to cut the slide and have a smooth finish, things of that nature.

or if i can take the short cut and thread the barrel and buy a compensator for it, if its legal that is, which i dont see why it wouldnt be, but better safe then sorry, how and what would i need?


thanks for looking, someone please help.

1. yes
2. they are not universal, so no the 1911 version does not fit. As to the last part, let's say impractical
3. More than you paid for the Sigma. It's an EDM process, and porting is not the same as a compensator. Both the barrel and slide would have to be ported.
3a You can thread a barrel but you don't have the right one: it has to extend beyond the end of the slide.

IMHO, take two aspirin and lie down until the feeling passes. You have the wrong gun for this project.
Compensators are used on USPSA Open guns built on 1911/2011 frames to allow rapid fire in competition. They are not allowed in other divisions in competition.

If the problem is that you don't like the recoil of a .40 Sigma, the practical solution is to trade it for a 9mm, or load .40 cartridges to minor power for practice..

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Science plus Art

im not doing it for competitions, just like the idea and have heard its much better, plus its a bit of a kick for my wife, but no funds to buy another gun, so there is that factor.

what is a edm process, a guy on here did his own, i wouldnt mind taking a shot at it. if its not rediculously hard.

thanks for the reply

momma always said i was too honest so if you dont have money for a new gun how can you afford to have your gun altered?

It would be cheaper to buy the lovely wife a used 9mm of midsize frame

Quality porting will require holes properly placed in slide to match holes placed in barrel.

None of the holes in the barrel or slide can be done with dremel drill press hand drill etc.

If you attempt to do it yourself then you will likely be devaluing the weapon almost surely below any acceptable level

The cost to have it done proper will be comparable to cost of some new and some used weapons of manageable recoil level.

$0.02 and worth is debatable

Oh and EDM is something like Electrical Displacement of material(metal) close if I remember, otherwise known as plasma cutter. It's like a real life Raygun that melts metal, no Sheet!

Good luck with the decision, oh and buy a Hi-Point and try it first

thanks for the info

no thanks on the hi-point.

i wasnt talking about having it done, but doing it myself, like others have done.

New here guys but I have a question. I have a S&W M&P 340 .357 and my question is can I get that short little barrel ported to cut down on the kick, plus it looks cool. Number 1.) is it possible 2.) who could do something like that! Thanks in advance guys! Joe

EDM stands for Electrical Discharge Machining . It is a far more precise form of electrical material removal, and does not use compressed air in a jet the way that a plasma cutter does. Totally different process.

The other people that you see that have done a porting job to their guns have access to a professional mill and training, or a friend that has training. This is not something that I would even CONSIDER trying with any of my guns, and I am generally up for trying almost any project myself.

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