Description
The Ultradyne Pegasus is a tanker-style compensator built to flatten out your AR-15 and keep the front sight parked exactly where you left it. It splits the difference between a pure muzzle brake and a comp, blending real recoil reduction with serious muzzle-rise control so your rifle settles fast between shots. If you shoot fast strings, run a red dot at speed, or just want your 5.56 to feel calmer than a bare crown, this is the kind of device that earns its keep on the range.
What Makes the Pegasus Different
Instead of dumping all the gas at once, the Pegasus uses progressive 90-degree side ports that vent combusting gases at staggered intervals. That spreads the recoil impulse out over a slightly longer window, which makes the whole recoil event feel smoother rather than sharp. Compensation ports up top redirect gas away from your line of sight, so you get less dust signature and a cleaner sight picture when you break the next shot. Folks running it report the gun stays notably flatter and follow-ups come easier, with one common note being that it makes a lightweight AR feel almost like a rimfire.
Build Quality on the Pegasus Brake
This one is machined from 416 stainless steel and finished in a salt bath nitride, which is about as durable a combo as you'll find on a muzzle device. It measures 1.25 inches in outside diameter and runs standard 1/2-28 threads, so it drops right onto the vast majority of 5.56 and .223 AR barrels. It's made in the USA, and the fit and finish reflect that.
Installing the Pegasus
A shrouded timing nut comes in the box, so there's no fussing with crush washers or shims to get it clocked straight. The nut lets you index the brake level and torque it down cleanly, and while getting it perfectly timed can take a couple of tries, it's a far simpler system than most. Basic hand tools and a torque wrench are all you need to get it running.
Key Specifications
- Manufacturer: Ultradyne USA
- Model: Pegasus
- Manufacturer Part Number: UD11010
- UPC: 850011462065
- Type: Muzzle Brake / Compensator (Tanker-Style)
- Caliber: .223 Rem / 5.56 NATO
- Thread Pattern: 1/2-28 TPI
- Platform: AR-15
- Material: 416 Stainless Steel
- Finish: Black Salt Bath Nitride
- Outside Diameter: 1.25 in
- Mounting: Shrouded Timing Nut
- Country of Origin: Made in USA
What’s Included
- Ultradyne Pegasus muzzle brake / compensator
- Shrouded timing nut
Frequently Asked Questions
Will the Pegasus fit my AR-15?
It's threaded 1/2-28, which is the standard thread pitch for the vast majority of 5.56 and .223 AR-15 barrels. As long as your barrel has 1/2-28 threads and enough clearance for a 1.25-inch outside diameter device, you're good to go. If you're running a non-standard or thinner profile setup, just double-check your muzzle threads before ordering.
Is the Pegasus a muzzle brake or a compensator?
It's really both, which is the whole point of a tanker-style design. The side ports work like a brake to cut felt recoil, while the top compensation ports vent gas to fight muzzle rise and keep your sights flat. That combo makes it a solid all-around pick if you want more than just recoil reduction alone.
Do I need a crush washer to install the Pegasus?
No, and that's one of the nicer things about it. A shrouded timing nut is included, so you can index the brake level and torque it down without messing with crush washers or shims. Getting it perfectly timed can take a couple of small adjustments, but the system is more forgiving than most.
Is the Pegasus loud?
Like most effective brakes and comps, it does redirect concussion and blast out to the sides, so it will sound louder to anyone standing next to you. That's the trade-off for how well it manages recoil and muzzle rise. Solid hearing protection is a must at the range, same as with any high-performance muzzle device.







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