Hey Y'all, I've got an M&P 15 Sport II, chambered in 5.56mm, and I really don't care for the muzzle brake that it comes with. My cleaning snake catches inside the mostly closed end.

I bought one that is very similar to the mil version used on the M-16s (where the end is wide open). However, it's thread size is completely different than the end of the barrel. The barrel (threads) fall right into the new brake.

Does anyone have any suggestions as to where I can get the open ended muzzle brake that fits my rifle?

There are many muzzle breaks out there available. The one you linked is made for paintball & may not hold up. Just make sure the threads are 1/2"-28

"Friends don't let friends use Bore Snakes."

Bore snakes are for a quick and dirty cleaning at the range or the hunting camp, a true cleaning kit is needed for doing a proper job. JM2C

As far as muzzle brakes, this site may help you some on choosing one and lead you where to get one: .30 Caliber Muzzle Brake Shootout - The Truth About Guns

Part of the problem is that it doesn't come with a muzzle brake. That's a flash hider.

The thread on the Sport II is 1/2"-28. So, get a device that has that thread diameter and pitch.

Personally, I like this one: AR15 Muzzle Rise Eliminator .223/5.56 [MRE] - $89.00 : Witt Machine

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Muzzle rise? What muzzle rise?
I dont notice any on my rifle with the stock birdcage.
As far as cleaning goes, my old aluminum rod works great if inserted carefully. It goes right through the bore and gets a brush/patch attached at the chamber end then pulled out again.
Maybe its because I`m old and never had a bore snake.
Jim

Jerry Miculek makes a great comp I have one on my M&P Sport they only cost 40 bucks.

+1, this one and the J-Comp from Strike Industries are my favorite value-for-money muzzle devices.

On my primary rifle I run a Seekins Precision Armaments Comp, which won the Truthaboutguns.com muzzle break test, twice.

5.56 Muzzle Brake / Comp / Flash Hider Shootout!

Interesting. I didn't even see the muzzle device you mentioned in the test you linked. Did I miss something? Maybe it goes by a different name?

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My bad, I was ordering something from Seekins Precision when I was posting so had it on my mind, I meant Precision Armaments for the muzzle brake.

The M&P 15 Sport II is equipped with a "Flash Hider" from the factory. A "Muzzle Brake" is a different device.

Flash Suppressors, Muzzle Brakes & Compensators – Just the Tip of the Barrel


Understanding Flash Suppressors, Muzzle Brakes, and Compensators

We often hear the terms flash suppressor, muzzle brake, and compensator used interchangeably, as some people are actually unaware of their separate functions and what they do. We have even heard the question, “What’s that funny thing on the end of my barrel?” Well, put your fears aside, it’s not an STD, it’s there to do an important job. Let’s take a look at each component and what it does, and then see some units that combine some of the uses of each one.
What Are Flash Suppressors

The purpose of a flash suppressor, or flash hider, as referred to by some manufacturers, is to guard the shooter from a significant portion of the visible flash. In fact, another term for the device is flash guard, although you don’t hear that used very often. The military adopted flash suppressors in order to preserve soldiers’ night vision. A major misconception is that a flash suppressor will hide the flash from the target you are shooting. Yes, a flash suppressor will reduce the overall flash signature compared to a barrel without one, but light travels in a straight line, and anything completely blocking the flash from what you are aiming at will also block the path of the bullet. Today, there are two primary types of flash suppressors, the duckbill type, with a number of prongs, and the birdcage type that is similar, but has a ring around its end for stability and to prevent the flash suppressor from being “caught up” on surrounding objects.
What Does Muzzle Brakes Do

A muzzle brake directs gasses to drive the firearm forward, helping counteract the recoil force back into the shooter. This is much like those reversers you see on jet aircraft when they are landing. Muzzle brakes are extremely important on larger-caliber guns; firing a .50 BMG without one could dislocate your shoulder. An unfortunate side effect of a traditional muzzle brake is that because energy is being directed back at the shooter, the sound levels and concussion forces generated during firing increase dramatically.
What Compensators Are For

A compensator vents some of the escaping gasses upward, reducing the rise in the barrel as the weapon is fired. This allows the shooter to more easily and quickly reacquire his target for faster follow-up shots. The majority of compensators available today also feature muzzle brake-style side ports for a combination of reduced recoil and muzzle rise.
Hybrids

There are muzzle devices that offer a combined reduction in flash signature, recoil, and muzzle rise; we call them hybrids. For this category of muzzle devices, we are identifying those that are truly designed to achieve a synthesis between the essential elements of the three separate components. A standard A2 flash suppressor, while having vents excluded from the bottom, does offer some of the qualities of a compensator, its primary job is to act as a suppressor, so we don’t include it as a hybrid device. The same goes for the BattleComp 1.0 compensator, which will reduce flash, but is primarily designed to be a compensator.
If you are trading out a factory-installed muzzle device for an aftermarket muzzle brake, be sure that the modification does not make your new configuration shorter than the legal, overall length (OAL) requirements of your firearm. Some rifles rely on a rather long muzzle device to reach OAL requirements. Generally, if your muzzle device is pinned onto the barrel, it may have been to allow the manufacturer to legally sell the firearm in your jurisdiction.
When choosing a muzzle device, the first thing to think about is how you’re primarily going to use your rifle. For shooting in low light situations, try flash suppressors. In competitive shooting where fast follow-up shots are key, a muzzle brake or compensator may help you win. Hybrids have quickly become popular among both casual and tactical shooters for their balanced, overall performance

Most people who decide they need a muzzle brake on a .223/5.56 mm are deluding themselves about their abilities.

.

And they don't make any friends on the shooting range!

Do tell. What are they missing?

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