Silencer Review: Mack Brothers Zenith (Titanium .30 Cal)

Mack Brothers has a solid reputation for high-end bolt-action receivers, and they also make a line of fairly affordable suppressors. But how do the suppressors stack up against the competition?

When a customer asked about using one one for a nice custom rifle build he was putting together, I didn’t have any feedback for him. My personal experience with Mack Bros’ cans was nil and some internet and video searches netted me next to nothing. So we reached out to Mack Bros to fix that.

We borrowed a few Mack Brothers suppressors to put through their paces, and first up for review here is the Zenith. There’s a shorty Zenith-K and a longer Zenith-L, but this is the original Zenith. It’s a 100% titanium, fully-welded suppressor that weighs in at a scant ~9 ounces. It’s designed for cartridges .30 caliber magnum-sized and smaller (think 300 Win Mag on down).

With its super-light weight and short length of only about 6 inches, the Zenith is ideal for hunting and PRS style use. It was right at home for me on 6.5 PRC, 7 PRC, and 300 BLK hunting rifles.

In keeping with the hunting/PRS sort of use, the Zenith comes with two front caps included. One, seen installed in most of the photos here, has an integrated muzzle brake to cut down on recoil. The other is a flush cap. Apparently the flush cap is slightly quieter and is obviously a bit shorter (OAL is 5.8″ or 6.25″ depending on which cap you use), but the brake cap will lighten up recoil more to help keep you on target.

Each of the front caps has a Torx-style tool pattern in the bore to assist with removal if necessary.

At its base, the Zenith is threaded in the industry standard HUB size (1-3/8×24) and it comes with a 5/8×24 fixed mount with wrench flats.

On this ridiculous little 9-inch 300 Blackout SBR, the Zenith sounded pretty darn good with 220 grain subsonic ammo. Compared to other titanium cans, it has a noticeably deep and solid tone. Basically, it sounds like a heavy steel suppressor rather than like how most thinner, lighter titanium ones sound.

I’ve shot quieter suppressors on short 300 BLK setups like this one, but I’m fairly sure all of them were larger and heavier. I haven’t shot anything with a nicer, deeper tone. For its size and weight, the Zenith is a very solid performer.

Over on a 6.5 PRC, the Zenith’s performance was even more impressive. Blast and concussion were eliminated entirely, recoil was cut significantly, and sound volume was brought down to . . . well, it sounded basically identical to a couple other, more expensive suppressors that I’ve had on this rifle over the last year.

The suppressor that’s sitting on the table in the photo above is a directly competitive model — all titanium and extremely similar in length and weight — from a big brand and is considered very premium. It’s a top performer, to be sure. I was very impressed when the Zenith went toe-to-toe with it, and I really don’t think I could pass the “Pepsi Challenge” comparison between the two. And the Zenith’s MSRP is a whopping $324 less.

Most suppressor baffle designs seem to favor either high velocity, high pressure ammo or subsonic ammo and they’ll excel in performance at one end of that spectrum more than the other. I think the Zenith’s performance with subs is on-par, but with a particularly nice tone, and on supersonic ammo it easily punches above its size and weight class.

Don’t miss the video embedded at top to see the Mack Bros Zenith for yourself. Overall the Zenith proved itself to be an extremely high quality suppressor with absolutely fantastic machining, welding, and finish. It’s incredibly lightweight and compact, and it sounds awesome with great sound suppression and a solid, deep tone.

Specifications: Mack Brothers Zenith Suppressor

Caliber: .30 cal rated up to 300 Win Mag
Mount Type: HUB threaded, comes with 5/8×24 fixed mount installed

Product Dimensions with Flush Cap:
Material: 100% Titanium
Weight: 9 oz.
Length: 5.8 in.

Product Dimensions with Muzzle Brake Cap:
Material: 100% Titanium
Weight: 9.5 oz.
Length: 6.25 in.

MSRP: $850