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Short barrels and pistol builds are notorious for slapping you and everyone next to you with side blast, and the Energetic Armament EA31 SOB Muzzle Device is built to tame exactly that. Rather than venting gas out to the sides like a brake, this flash can channels the muzzle blast, flash, and concussion forward and downrange, which cuts down on the harsh percussion you feel behind the gun. It measures 3.47 inches long with a 1.5 inch diameter and weighs in around 5.76 ounces, so it adds a little heft up front while keeping a clean, streamlined can profile.
The SOB name stands for Son of a Bolt, and the device is machined from 17-4 stainless steel heat treated to the H900 condition before getting a black Nitride finish. That combination gives you a muzzle device that shrugs off heat and holds up to repeated range sessions without babying it. Because it directs everything forward, the EA31 is a favorite on AR pistols, SBRs, and any setup where you spend time indoors or shoulder to shoulder with other people at the range. It won't act like a suppressor and it isn't meant to reduce recoil, but for cutting the felt blast and keeping the shooting position more pleasant, it earns its spot.
Installation is straightforward on any barrel cut for standard 1/2×28 threads, which covers the vast majority of 5.56 and .223 AR platforms. The EA31 comes with a 1/2×28 direct thread adapter and a dedicated 5.56mm front end cap sized for the caliber, so the bore is properly matched to the projectile passing through. Thread it on, snug it down, and you're set. It's a simple upgrade that makes a real difference the first time you touch off a round on a short barrel.
It's a flash can style device that redirects the muzzle blast, flash, and concussion forward and downrange instead of out to the sides. That takes a lot of the harsh percussion away from the firing position, which makes shooting more comfortable for you and anyone standing nearby. Keep in mind it's built for blast management, not recoil reduction or sound suppression.
As long as your barrel has standard 1/2×28 threads, it will thread right on, and that covers the vast majority of 5.56 and .223 AR platforms. It comes with the 1/2×28 direct thread adapter and a caliber-specific 5.56 end cap. Installation is simple with basic hand tools.
It shines on short-barreled setups and AR pistols, where side blast tends to be the most punishing. It works fine on full-length carbines too, but the shorter your barrel, the more you'll appreciate what it does. It's also a solid choice for anyone who shoots indoors or on a crowded firing line.
The body is machined from 17-4 stainless steel heat treated to the H900 condition, then finished in black Nitride for corrosion and wear resistance. That means it holds up to heat and repeated range use without needing much care. It's a device you can run hard and not worry about.
| UPC | 853406008312 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | EA31 |
| Length | 3.47" |
| Model |
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