Breek Arms 5.56 NATO 2BO-S Short Muzzle Brake Single Port

The Breek Arms NATO 2BO-S short muzzle brake keeps your rifle footprint compact while it fights recoil and muzzle rise for faster, more confident follow-up shots. This 5.56 NATO single port design gives you the flat-shooting benefit of a full-size brake in a shorter package. It is a smart pick for builders who want performance without adding unnecessary length to the muzzle.

What the Breek Arms NATO 2BO-S is and who it is for

The 2BO-S is a single port muzzle brake tuned to counter the forces that lift and shove the muzzle during firing. The short body makes it ideal for shooters trying to keep overall length trim, whether that is a shorter barrel, a maneuverable defensive carbine, or a tidy range gun.

If you value a shorter footprint but still want meaningful recoil control, this is the brake built for that trade. It rewards shooters who care about staying on target through quick strings of fire.

Key features of the Breek Arms NATO 2BO-S

• Large 90 degree single port that mitigates recoil and muzzle rise
• Short body that keeps your overall rifle length trim
• Machined from 4140 steel for durability under hard use
• Heat treated for hardness to handle high round counts
• Nitride finish for corrosion resistance and a clean look
• Includes one crush washer for proper timing on install

Specs and build details

This short brake threads onto a 13/16 inch by 16 TPI muzzle, the same widely used pattern found across many 5.56 and .223 devices. A single crush washer comes in the box so you can index it correctly during installation.

The 4140 steel body is heat treated and nitrided, which gives you the strength to take repeated high-heat firing and the surface protection to resist wear and the elements. The shortened geometry trims length while the single 90 degree port still does the heavy lifting on recoil. As with other brakes in this family, it is not rated for AR-15 barrels shorter than 10.5 inches in 223 caliber, so plan your build accordingly.

Installation, use, and care

Fitting the 2BO-S follows the standard brake routine. Spin it onto the 13/16 inch by 16 TPI threads, seat the included crush washer, and torque to the proper index so the port faces up and level.

A single port brake still produces noticeable concussion compared with a bare muzzle, so expect that side blast in exchange for a flatter, faster shooting rifle. Keep the muzzle threads clean, use anti-seize if you rotate devices, and clear carbon from the port during cleaning. The nitrided steel handles weather and abuse, though a quick wipe keeps it looking sharp. Mount the Breek Arms NATO 2BO-S on a compact 5.56 upper and you get real recoil control in a short package, and you can round out the build from our parts and upgrades collection.

Getting the most from the Breek Arms NATO 2BO-S

Short does not have to mean weak. The single 90 degree port on this brake is sized and angled to do serious work against muzzle rise, so you keep the recoil-taming benefit while trimming length off the front of the rifle. That length savings matters on a truck gun, a home-defense carbine, or any build where handiness counts.

Because it is compact, the Breek Arms NATO 2BO-S also plays well with shorter barrels and lighter setups where a full-length brake would push overall length past what you want. Pair it with a mid-length or carbine gas system and quality ammunition and you will feel a flat, controllable rifle that is quick in and out of position. The steel body handles the heat of rapid fire without complaint, and the nitrided surface keeps carbon from baking on the way a bare finish might.

Made by Breek Arms, this short single port brake is an easy way to shrink your muzzle footprint without giving up control. Ships direct to your door, no FFL required.