The Faxon Firearms .36 Harmonix Sentry is stocked here. Below is the practical detail: what it is, what it fits and what you need to own it legally.
Specifications
| Type | Sound suppressor |
|---|---|
| Brand | Faxon Firearms |
| Rated calibre | 7.62mm (.308) |
| Bore class | .36 bore |
| Finish | Black |
| SKU | FF-SIL-R-3DPC-36-01 |
| Price | $1,011.00 |
The honest description
A suppressor reduces muzzle report by giving expanding gas somewhere to slow and cool before it leaves the muzzle. It does not make a rifle silent, and on supersonic ammunition it cannot remove the ballistic crack of the bullet itself. What it does deliver is a large reduction in the pressure wave at the shooter’s ear, less recoil, and the ability to hold a conversation on a firing line.
Calibre compatibility
This is a .36 bore unit, which accepts 9mm and .357 class cartridges with a little extra clearance. Never run a projectile larger than the rated bore. A baffle strike destroys the suppressor, can damage the host rifle and is genuinely dangerous.
Reading the specifications
Chasing decibel figures alone is a trap. Published numbers come from different test methods, and the difference you actually notice is between suppressed and unsuppressed, not between two good cans.
Decide whether this stays on one rifle or moves between several. That single question decides direct thread versus a quick detach system more than anything else.
Budget
At $1,011.00 this is a premium option. You are generally paying for materials, machining tolerance and mounting systems rather than a dramatic difference in sound. Remember the 200 dollar tax stamp sits on top of the purchase price, and a mount may be extra.
The NFA transfer process
Buying a suppressor is not like buying a rifle. It transfers under the NFA through a registered dealer, with an ATF Form 4, a 200 dollar tax stamp and a background check. Electronic filing has shortened waits considerably compared with paper. Suppressors are legal for civilian ownership in most states but prohibited in several, so confirm your own state before ordering. The regulator’s overview sits at the ATF.
Looking after it
Maintenance depends on what you shoot. Pistol calibre cans accumulate lead and need periodic service, rifle cans usually do not. Never attempt to disassemble a sealed unit.
Browse more
Browse the suppressor range, 8.6 Blackout ammunition and 300 Blackout ammunition, or check what your setup delivers with the ballistics calculator.
Ear protection still matters
Suppression protects bystanders and dogs as much as the shooter, which is often the real reason hunters buy one.
How the rifle behaves suppressed
Expect the rifle to handle differently. Weight at the muzzle slows the swing and changes how the rifle balances in the hand, and on a light hunting rifle the effect is noticeable immediately.
A note for new buyers
The most common first timer mistake is not planning for the wait. Buy the can before you need it, not the week before a hunt.
What it is made of
Additive manufactured baffle stacks have changed what is possible in this category, allowing internal geometry that could not be machined conventionally.
A buyer’s view
Do not buy on decibel figures alone. Weight, length, mount and heat tolerance decide whether you actually enjoy using it.
Frequently asked questions
What does the tax stamp cost?
200 dollars, paid as part of the Form 4 transfer.
Is it legal in my state?
Suppressors are legal for civilian ownership in most states and prohibited in several. Check your own state law before ordering.
What calibre is this rated for?
7.62mm (.308). Never run a projectile larger than the rated bore, since a baffle strike will destroy the unit and can injure the shooter.
Is this the current price?
Yes, $1,011.00 is current and this is held stock. Add the 200 dollar tax stamp when budgeting.
Do I need a muzzle device?
Only if the design uses a quick detach mount. Direct thread units screw straight onto a threaded muzzle.
How long do suppressors last?
Properly used and within their rating, a well made centrefire can will outlast several barrels.
Can I shoot subsonic and supersonic through it?
Yes, within the bore rating. They will sound completely different, because supersonic ammunition keeps the bullet’s crack.
Do I still need ear protection?
On most centrefire rifles yes. Suppression reduces the level substantially but usually not below the threshold where repeated exposure causes cumulative damage.
How does diameter affect sights?
A larger diameter can obscure iron sights and low mounted optics. Check clearance if you run either.
What material is best?
It depends on use. Titanium for carrying, stainless or Inconel for volume fire. The manufacturer’s rate of fire rating matters more than the material name.






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