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SureFire MB556K-PN Muzzle Brake (Pinnable)

SureFire MB556K-PN Muzzle Break
SureFire MB556K-PN Muzzle Break

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List Price: $149.00
Our Price: $134.10

Stock Status:(Out of Stock)
Product Code: SUREFIRE MB556K-PN


Caliber 5 .56 mm (.233)
Material Heat-treated stainless steel
Length 2 .49 inches
Length added to wpn 1 .86 inches
Adapter threads
Color Black
Enables attachment of FA556K or FA556-212 suppressors to Colt Commando, M4, M16, HK 416 with 14.5" or longer barrel, and to other 5.56mm (.223 cal.) semi-auto, bolt-action, or assault rifles with Mil-Spec 1/2-28 muzzle threads and (due to slight overlap) first .170" of barrel behind thread shoulder clear of obstructions and no more than .800" in diameter. This adapter functions alone as a high-performance muzzle brake when the suppressor is removed. Patented design greatly diffuses side blast, counteracts up/right muzzle movement to keep muzzle on target, eliminates felt concussion on shooter. Heat-treated stainless steel construction.
This model offers a extended shoulder to blind pin and weld for permanent attachment to barrels.

Average Customer Review: 5 of 5 Total Reviews: 2 Write a review.

  0 of 0 people found the following review helpful:
Surefire August 13, 2014
Reviewer: Eric Skupien from Chicago, Illinois, United States  
This is the best muzzle brake I have ever used/experienced on an AR-platform rifle. I have this brake pinned to the barrel of my BCM 14.5-inch mid-length upper receiver, and it does exactly what it was designed to do; it controls your recoil and your muzzle-drift in all directions. I feel obligated to add however an important note concerning the fact that this brake does absolutely nothing as far as flash-suppression; the muzzle flash from this brake makes your rifle seem like it's firing a 155mm cannon shell rather than a 5.56mm cartridge. Although, this is merely the default nature of having a compensator rather than a flash hider, so this is no real fault of the brake design itself. Ultimately, if you need flash-suppression, this is your worse choice. If flash is no real problem to you, than by all means use this brake and have every single shooter next to you hate you with a fiery passion.

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  4 of 4 people found the following review helpful:
Good to go April 26, 2012
Reviewer: Anonymous Person  
Ordered Monday, received Wednesday :)

Comes with shims, instructions, alignment wheel, warranty card, etc.

Identical to MB556K except for an 1/8th (approx) lip off the back of the device, with a pre-drilled hole for pinning.

The diameter of the lip is almost the same profile as a Noveske N4 profile chrome-lined barrel.

Very pleased with BCM on their timeliness in shipping, and SureFire with their product.

Although, getting an actual product photo may be helpful to future customers.

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AR-15 Barrel Parts, Flash Suppressors, Gas Blocks, etc. > Flash Hiders and Compensators