I want a 9mm brake to tame rifle

Bikebreath · Jun 23, 2018

Of course I’m assuming a muzzle brake is the only way to reduce recoil. I’m not completely trusting of reviews, especially when someone here knows from experience. Any suggestions will be appreciated.

It’s a complete CMMG rifle, 16” barrel which came with muzzle device in pic below.

outrider58 · Jun 23, 2018

I have one of these on my 9mm SBR. I absolutely love it.

https://www.kawvalleyprecision.com/KVP-Linear-Compensator-p/kvp-linear-blk.htm

Bikebreath · Jun 23, 2018

outrider58 said:
I have one of these on my 9mm SBR. I absolutely love it.

https://www.kawvalleyprecision.com/KVP-Linear-Compensator-p/kvp-linear-blk.htm

It’s gonna sound like I’m arguing with someone helping me, but looking at that isn’t making sense. I’m expecting slotting that will force the barrel down. That thing looks weird. (...and now I’m on the hate list).

davsco · Jun 23, 2018

everything JP makes, works. just go to their website and pick something out. www.jprifles.com.

outrider58 · Jun 23, 2018

Bikebreath said:
It’s gonna sound like I’m arguing with someone helping me, but looking at that isn’t making sense. I’m expecting slotting that will force the barrel down. That thing looks weird. (...and now I’m on the hate list).

A rising barrel can be due to poor technique as much anything else. :innocent0

This comp is super light. It pushes the properly mounted rifle straight rearward while at the same time, pushing the sound straight forward(your shooting neighbors will really appreciate that), down range.

When I shoot this gun, the sound is extremely quiet, as is the recoil. While wearing ear pro, the sound is almost as quiet as my suppressed 9mm AR pistol. It is a very tame shooting gun.

Bikebreath · Jun 23, 2018

outrider58 said:
Well since you brought it up, a rising barrel is more due to poor technique than anything else. There, I've said it.

This comp is super light. It pushes the properly mounted rifle straight rearward while at the same time, pushing the sound straight forward(your shooting neighbors will really appreciate that), down range.

When I shoot this gun, the sound is extremely quiet, as is the recoil. While wearing ear pro, the sound is almost as quiet as my suppressed 9mm AR pistol. It is a very tame shooting gun.

You asked, so I told.

I’m a big boy and I can take my medicine. :thumbsup:

MifflinKid · Jun 23, 2018

I have a Kaw Valley linear compensator on the AR-9 I built several years ago. It really cuts down on the sound when you're behind the gun. As for reduced recoil, I don't know. There isn't much recoil from a 124gr 9mm bullet. So I can't recommend you get one if that is your primary interest. I just can't perceive any difference.

However, I was shooting it at a range in Pennsylvania two years ago. A guy competing in a practical handgun match came walking by. He stopped and asked me what I was shooting. I told him it was an AR-9 I had built. He said "Really? It's sounds like a .22." It definitely reduces the sound that reaches you as you're shooting and the sound for those around you.

Biggfoot44 · Jun 23, 2018

Muzzle Device 101 -

Muzzle devices * do somthing * with the gasses at the muzzle . Typical goals , which could be overlapping, or could be working against each other, typicall include reducing visable flash , directing the vector of muzzle blast, or pushing the muzzle in particular direction, generally down to counter muzzle flip.

The A2 , such as came stock on Bike's rifle is the yard stick everything else is compared . ( And a decent all around option, at outstanding value .

The Linear Compensator that Outrider linked has primary design goal of directing blast forewards, away from the shooter . These are the Bee's Knees for SBR, and for shooters generally who wise to minimize the sound level at their ears. But not what * I Think * Bike is looking for.

Muzzle Breaks and Compensators will as major feature reduce muzzle flip . The sugguested JP Enterprise will have a variety of such devices to minimize flip . Some of them are large and ugly , but they reduce flip.

But be aware that due to laws of physics, they will have less effect on a 16in 9x19 , than on a 5.56 , or other centerfire rifle . And a larger portion of felt recoil in a 9x19 will come from the recpricating of the really heavy buffer , than from the gas pressure at muzzle.

Also be aware that a device with maximum downforce , will also have increased muzzle flash, and noise directed to shooter. Once again less pronounced with a 16in 9x19 than a rifle cal , or shorty 9x19 .

outrider58 · Jun 23, 2018

Biggfoot44 said:
Muzzle Device 101 -

Muzzle devices * do somthing * with the gasses at the muzzle . Typical goals , which could be overlapping, or could be working against each other, typicall include reducing visable flash , directing the vector of muzzle blast, or pushing the muzzle in particular direction, generally down to counter muzzle flip.

The A2 , such as came stock on Bike's rifle is the yard stick everything else is compared . ( And a decent all around option, at outstanding value .

The Linear Compensator that Outrider linked has primary design goal of directing blast forewards, away from the shooter . These are the Bee's Knees for SBR, and for shooters generally who wise to minimize the sound level at their ears. But not what * I Think * Bike is looking for.

Muzzle Breaks and Compensators will as major feature reduce muzzle flip . The sugguested JP Enterprise will have a variety of such devices to minimize flip . Some of them are large and ugly , but they reduce flip.

But be aware that due to laws of physics, they will have less effect on a 16in 9x19 , than on a 5.56 , or other centerfire rifle . And a larger portion of felt recoil in a 9x19 will come from the recpricating of the really heavy buffer , than from the gas pressure at muzzle.

Also be aware that a device with maximum downforce , will also have increased muzzle flash, and noise directed to shooter. Once again less pronounced with a 16in 9x19 than a rifle cal , or shorty 9x19 .

...in a nut shell. :party29:

danb · Jun 23, 2018

I have this style: https://www.venomdd.com/products/ar9-9mm-compensators

DSCN1260_1da78394-0ef3-4d45-99d8-80b36cc27620_1024x1024.JPG

I picked this mainly based on a really good review of about 60 AR10 and AR15 muzzle brakes on TTAG (see here for one of the series:http://www.thetruthaboutguns.com/2016/10/jeremy-s/ar-15-muzzle-brake-shootout-3/).

The Venom Defense brake is a) loud as **** b) looks badass (always important) and c) works. Any design similar to this will work - many of the winning designs for AR10 and AR15 are also made in 9mm. .Gas pressure at the muzzle is a lot lower for 9mm from a 16" barrel, so they will not work as well as one designed for a rifle caliber. (from a 16" barrel, 9mm has ~1/7 the pressure of 556 or 762). Anything that truly reduces recoil will be loud as **** because it redirects gasses back and to the side.

An alternative to reducing recoil is btw, a beefier stock. Adding weight to the stock is a time honored way to lower recoil. Or a limbsaver recoil pad.

Another alternative is to keep the stock firmly in your shoulder. I can shoot 308 all day no brake as long as I keep that shit tight. Or I can get sloppy and go home with a bruise.

Incidentally, I recently switched one of my rifles to a simple short BCM gunfighter mod 0, precisely because the brake was loud as **** and the recoil is after all not really that bad.

jimbobborg · Jun 23, 2018

outrider58 said:
I have one of these on my 9mm SBR. I absolutely love it.

https://www.kawvalleyprecision.com/KVP-Linear-Compensator-p/kvp-linear-blk.htm

I have one of these. It works, but not as well as my reloads. 147gr polymer coated lead bullet with 2.4gr of Titegroup. Almost zero dot movement on my Steel Challenge 9mm AR (the working one).

Bikebreath · Jun 23, 2018

jimbobborg said:
I have one of these. It works, but not as well as my reloads. 147gr polymer coated lead bullet with 2.4gr of Titegroup. Almost zero dot movement on my Steel Challenge 9mm AR (the working one).

Interesting; do you use the same powder load in pistol and rifle? Maybe I’ll just use my reloads and a little more manly muscle on holding the rifle and stick with the A2.

Art3 · Jun 23, 2018

danb said:
I have this style: https://www.venomdd.com/products/ar9-9mm-compensators

I picked this mainly based on a really good review of about 60 AR10 and AR15 muzzle brakes on TTAG (see here for one of the series:http://www.thetruthaboutguns.com/2016/10/jeremy-s/ar-15-muzzle-brake-shootout-3/).

The Venom Defense brake is a) loud as **** b) looks badass (always important) and c) works. Any design similar to this will work - many of the winning designs for AR10 and AR15 are also made in 9mm. .Gas pressure at the muzzle is a lot lower for 9mm from a 16" barrel, so they will not work as well as one designed for a rifle caliber. (from a 16" barrel, 9mm has ~1/7 the pressure of 556 or 762). Anything that truly reduces recoil will be loud as **** because it redirects gasses back and to the side.

An alternative to reducing recoil is btw, a beefier stock. Adding weight to the stock is a time honored way to lower recoil. Or a limbsaver recoil pad.

Another alternative is to keep the stock firmly in your shoulder. I can shoot 308 all day no brake as long as I keep that shit tight. Or I can get sloppy and go home with a bruise.

Incidentally, I recently switched one of my rifles to a simple short BCM gunfighter mod 0, precisely because the brake was loud as **** and the recoil is after all not really that bad.

Before I even started reading what you wrote under that pic, I cringed thinking, "Oooooh that looks loud!"

md_al · Jun 23, 2018

https://sdtacticalarms.com/-3-lug-Muzzle-Brake-Carbon-Steel-Black-_p_171.html

What about a 3 lug muzzle brake?

SCARCQB · Jun 23, 2018

I got this from eBay . Tames recoil well. Zero muzzle flip and it’s threaded 1/2x28

The compensator reduces muzzle flip effectively that you won’t lose track of the red dot and target during firing.

The_Emperor · Jun 24, 2018

Primary Weapons Systems makes one. I've been looking into their 9mm ar and it seems to keep the muzzle down.

https://www.primaryweapons.com/product-url-3922

jimbobborg · Jun 24, 2018

Bikebreath said:
Interesting; do you use the same powder load in pistol and rifle? Maybe I’ll just use my reloads and a little more manly muscle on holding the rifle and stick with the A2.

No, that load for my carbine just cycles the slide on my CZ SP-01, and messes with my transitions with the pistol. I use the same bullet, but I use 3.2gr of Titegroup for my pistols. The heavier powder charge works great with the PCC, but there's more dot bounce.

atblis · Jun 24, 2018

I can't imagine 9x19 has enough gas for a brake/comp to do much of anything.

outrider58 · Jun 24, 2018

atblis said:
I can't imagine 9x19 has enough gas for a brake/comp to do much of anything.

...except make a lot more noise maybe. That's why I chose the linear.

erwos · Jun 24, 2018

md_al said:
https://sdtacticalarms.com/-3-lug-Muzzle-Brake-Carbon-Steel-Black-_p_171.html

What about a 3 lug muzzle brake?

This is EXACTLY what I've been looking for for my M11/9. Thanks!

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I want a 9mm brake to tame rifle

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