AR-15 Parts, NFA, Suppressors
Centurion Arms Suppressor: Inside the Maximus Line
Oct
A Centurion Arms suppressor is a fairly new idea from a company known for hammer-forged barrels, MK12 builds, and hard-use rifles. The Maximus line, led by the Inconel Maximus-L, is the result, and it does not try to win on sound numbers alone. Monty LeClair, the retired Navy SEAL who owns Centurion Arms, designed it around problems he saw with suppressed rifles for years.
The lead model is the Maximus-L in Inconel, a 5.56 duty can. PEW Science tested it on a 10.3-inch MK18 in March 2025. Monty said PEW’s results showed “we were the number one rated duty grade can in Inconel.” We asked him why he puts his name on a Centurion Arms suppressor. His goal was simple. A suppressed AR should run the way it does unsuppressed, only quieter and with far less gas in the shooter’s face.
Why Centurion Arms Built a Suppressor
Monty has used suppressors in the military and in civilian shooting. To him, sound is only one part of the job. “Sound is one piece of it,” he said. “But also flash is another piece of that as well. So basically just reducing your overall signature.” In his experience, early cans sped up bolt velocity and pushed extra gas back through the gun. That made a carbine less reliable and less pleasant to shoot.
The opening for a Centurion Arms suppressor came with 3D printing. Printing produces internal geometry that cannot be machined in the traditional way. Monty said the first printed prototype worked surprisingly well. The team then refined vent sizes and pressure paths from there.
How the Centurion Arms Suppressor Handles Gas
Much of the market talks about “flow through” designs, but Monty avoids that label for the Maximus. Some early flow-through cans, he said, reduced back pressure but were not very quiet. The Maximus takes a hybrid approach. “We have actually a standard baffle stack, so the sound is extremely good,” he explained, “and we’ve found a way to shunt the extra pressure that is created by the baffles.” That excess gas leaves the front of the can instead of coming back at the shooter.
Centurion’s product pages describe the payoff the same way. They cite minimal change to bolt velocity and ejection angle, less blowback, and fewer fumes in the shooter’s face. Monty put it plainly. “It’s super pleasant to shoot. You don’t hardly get anything back,” he said. The rifle also stays cleaner because less carbon is driven back into the action. On reliability he was just as direct. “It doesn’t speed up bolt velocity, so it doesn’t have any effect on the reliability of the gun.”
The Inconel Maximus-L Leads the Line
The Inconel Maximus-L is the Centurion Arms suppressor Monty built for the hardest use. It is 3D-printed from aerospace-grade Inconel, weighs 14 ounces, and wears C-series Cerakote in Armor Black, Coyote, or OD Green. It is 6.25 inches long and 1.625 inches in diameter with a 1.4-inch blast baffle. It covers .17 through .223, is rated for full-auto use, and Centurion lists 34 dB of sound reduction. Monty noted that jet engines use Inconel for its stability at extreme heat.
That durability is the point. “If I am going to continuously do a lot of full auto, a lot of heavy, hard use, then I would favor the Inconel,” he said. Monty also pointed out that competing titanium cans in the PEW comparison weighed close to 11 or 12 ounces. The Inconel Maximus-L gives up only a few ounces to them while using a far tougher alloy.
The Lighter Maximus-L-Ti
The Maximus-L-Ti uses the same dimensions in 3D-printed titanium with a DLC finish and weighs 7.3 ounces. For competition strings of 30 or 40 rounds with time to cool, Monty considers titanium perfectly adequate. For hunters, he sees no reason to pick anything else.
The Maximus-H for .30 Caliber Rifles
For 7.62 rifles, the Maximus-H-Ti applies the same Centurion Arms suppressor design to a heavier host. It is 3D-printed titanium with a DLC finish, 8 inches long, and 1.625 inches in diameter. It has a 2.9-inch blast baffle and weighs 9.9 ounces. Centurion lists the same 34 dB sound reduction. When we called the Maximus the general-purpose choice in 5.56 or .30 caliber, Monty agreed without hesitation.
HUB Mounting and Real-World Durability
Every Centurion Arms suppressor in the Maximus line uses the HUB rear thread. That 1-3/8×24 interface has become an industry standard. The benefit is choice. A shooter can run a direct-thread mount or a flash hider and quick-detach mount from almost any HUB-compatible maker, and Centurion now offers its own HUB mount too. Monty also said testing showed minimal point-of-impact shift with and without the can attached.
Durability testing is where Monty’s background shows. Centurion ran the Inconel Maximus-L through SOCOM-style firing schedules. Monty described them as a mix of paced semi-auto strings, bursts, and full-auto magazine dumps. The product page says the can consistently passes 10 of those firing tables. Monty said the Cerakote held up as well.
A Centurion Arms Suppressor Built to Monty’s Standard
Centurion designs most of its products around what Monty would carry himself, and the Maximus is no exception. “I want stuff that’s going to be durable,” he said. “I want stuff that I feel I would feel comfortable with putting my life on the line with.” That standard comes from someone who has used suppressed rifles where failure is not an option.
Buying a Centurion Arms Suppressor in 2026
The federal side of suppressor ownership has changed dramatically this year. The One Big Beautiful Bill Act cut the NFA tax on suppressors from $200 to $0 effective January 1, 2026. On August 5, 2026, a federal court in Texas ruled in Silencer Shop Foundation v. ATF that NFA registration and approval rules cannot be enforced for untaxed items like suppressors, and the Justice Department chose not to appeal. On October 9, 2026, ATF went a step further with an open letter that applies the ruling nationwide. ATF no longer requires prior approval or registration to make or transfer a suppressor. A Centurion Arms suppressor now transfers like any other firearm, with a Form 4473 and a NICS background check at a dealer in your home state. Anyone who wants federal registration can still file a Form 4.
State law is a separate matter, and ATF’s change does not touch it. Some states only allow suppressors that are registered under federal law, so a voluntary Form 4 may still be the right path there. Suppressors also remain illegal for civilians in California, Delaware, Hawaii, Illinois, Massachusetts, New Jersey, New York, Rhode Island, and Washington, D.C. Centurion will not ship to those jurisdictions. Before ordering a Centurion Arms suppressor, confirm the current rules where you live.
Choosing the Right Maximus
Start with the Inconel Maximus-L for a 5.56 rifle that will see sustained fire. Pick the Maximus-L-Ti for the lightest 5.56 setup and the Maximus-H-Ti for 7.62 hosts. Stock on these cans is limited, so check the product pages at AR15Discounts and confirm your state’s rules. Then choose the Centurion Arms suppressor that matches how your rifle will actually be used.
FAQ
Is a Centurion Arms suppressor flow through?
Not by Monty’s definition. The Maximus uses a standard baffle stack for sound. It redirects excess pressure forward out of the can to keep back pressure low.
Should I choose titanium or Inconel for my Centurion Arms suppressor?
Choose titanium for light weight, hunting, and typical carbine use. Choose Inconel for sustained full-auto or very heavy fire, since Centurion rates the Inconel Maximus-L for full-auto use.
What mount does the Maximus use?
Every Centurion Arms suppressor in the Maximus line uses a 1-3/8×24 HUB rear thread. It works with Centurion’s HUB mount and with direct-thread and quick-detach mounts from other HUB-compatible makers.
Do I still need a Form 4 to buy a Centurion Arms suppressor?
Not under federal rules. As of October 9, 2026, ATF no longer requires a Form 4, prior approval, or registration for suppressors, so the transfer runs on a Form 4473 and a NICS check at a dealer in your state. Some states still require federal registration under their own laws, and ATF will keep accepting Form 4s for buyers who need or want one, so confirm your local rules before ordering.