Silencer Saturday #395: BOE Mod 1 Silencer

by Daniel Y

Published: August 30th, 2025

silencer saturday 395 boe mod 1 silencer

Good afternoon, everyone, and welcome back to TFB’s Silencer Saturday, brought to you by Yankee Hill Machine, manufacturers of the YHM R45 Multi-Host Suppressor. This week we are looking at the full-size Mod 1 silencer from BOE Suppression. It is a unique design that puts up some impressive performance.

Silencer Saturday @ TFB:

BOE Suppression is a newer player in the silencer space, but they are part of a familiar company, C Products Defense, aka Duramag. That's right, one of the biggest makers of metal AR mags ( including extra-cool ones anodized in camo patterns you know and love) is making silencers too. Our first exposure to these silencers was at SHOT Show in the Duramag booth, where early prototypes were on display.

In a previous Silencer Saturday article, we took a look at this family of silencers more generally. Head over to give that a read if you have not already. The design of these silencers is interesting and differs from other centerfire rifle silencers, which are usually sealed, welded designs. Instead of that approach, BOE uses a truly modular design.

Each suppressor ships in a hard case, disassembled. The outer tube is the serialized component. The baffle monocore slides into the tube and has 1.375-24 HUB threads at the muzzle end to work with industry-standard attachment methods. The baffle core comes in inconel or titanium options, both coated in D360. Rather than large expansion areas, the core has an array of smaller compartments formed by the core are the tube wall. These work like baffles in that they give gases a place to expand, but their structure and arrangement are visually distinct.

The other interesting feature is part of that modularity focus, but it deserves a separate analysis. Two front caps are included, one with ports and one with a closed design. The closed front acts like a traditional silencer, trapping as much gas and flash as possible. The open design vents some gases forward and reduces backpressure in exchange for being a little louder. The Mod 1 retails for $1,299 for all caliber and material options.

Specs

Mod 1 .30 CAL Titanium core

Length: 6.8"

Core Material: Ti64 Grade 23 Titanium

Tube Material: Grade 9 Titanium

Weight: 15oz

Diameter: 1.75"

Core Coating: D360 Coating™

Caliber Compatibility: 7.62 NATO, .308 WIN, 300 WM, 7.62x39mm

Mod 1 In Action

BOE Suppression set me up with three members of their silencer family: the Mod 1 .30 caliber with a titanium core, a .36 caliber Mod1 also with a titanium core, and a Mod 1s with an Inconel 5.56 core. We previously covered the shorter Mod 1s, particularly on shorter barrel firearms. The only real difference between the full-size Mod 1 and the shorter Mod 1s is the length. The diameter and baffle structure design are identical.

Compared to the shorter Mod 1s, the long version is quieter. All of that extra internal space allows the gases more time to expand and cool. The longer baffle system and extra internal volume also cut down on muzzle flash. With the short version and vented cap there is more noticeable flash than with the longer silencer.

Over the summer, I have used the Mod 1 on various rifles. But most of that use has been on large-frame ARs. First, I ran the Mod 1 with the vented cap on my Brownells BRN-10. That gun is a very poor suppressor host for a few reasons, but the most serious is the charging handle design. The original design of the AR-10 had the charging handle inside the carry handle. This leaves an opening at the back of the upper receiver where the gripping portions of a modern carry handle sit. Instead of covering that pathway and redirecting the gas, as seen with charging handles like the VLTOR 556 or Gas Buster, the old AR-10 has nothing to block that gas flow and it vents right into the shooter’s face.

I have fired no more than a few suppressed rounds with the BRN-10 in the past because it cycled hard and blew a ton of gas in my face. It is simply not fun to shoot that way. That being said, with the Mod 1 and vented end cap it was more bearable. The cycling did not feel as rough and there was less gas making it to the shooter. But while the BOE silencer made an improvement the gun is still just a poor host.

The other gun that has gotten a lot of use with this silencer is a Palmetto State Armory Sabre-10 in 6.5 Creedmoor. That review is still in progress, but it runs so well with the Mod 1 suppressor that it will stay on the gun for the rest of the review cycle. With the gas system dialed back and the vented end cap installed that gun runs just almost like it is unsuppressed. It even keeps the magazine mostly clean rather than depositing the thick layer of soot most commonly seen on magazines used with suppressors.

One part of reviewing guns that must be done even though it can be tedious is group testing. I always try to run several types of ammo for groups to see what a gun is really capable of. With the barrel broken in and the Mod 1 suppressor fitted, the Sabre-10 will put up 10-shot groups from 1.3 to 2.0 MOA depending on ammo. And it will do this while being fairly quiet. The length of an AR-10 action plus a 20-inch barrel puts the silencer well ahead of the shooter’s ear which also helps perceived performance.

Because the Mod 1 has no native mounting system, it fits on any HUB-threaded mount. Many of my guns are set up for SilencerCo ASR mounts, so I put that system on the Mod 1. Testing has shown that some muzzle devices make a real difference in the performance of certain suppressors. Perhaps that would be a good topic for a future article, though measuring suppressor performance is tricky even with laboratory equipment. Regardless, it seems to sound good across mounting methods whether QD or direct thread.

My subjective impressions of the silencer line up well with PEW Science testing. Under that protocol, the Mod 1 scored a 44.1 with the 5.56 baffle core installed on a 14.5-inch 5.56 NATO AR. That testing used the closed endcap.

This is an impressive score and shows that BOE Suppression did their homework with this design. If you get a chance to demo one of these silencers you should try it for yourself. In an upcoming article we may get to use the .36 caliber model on some interesting medium-bore rifle cartridges.