Taper Mounts and Tri Lugs

  • Jack Collins

It’s no secret that muzzle devices like suppressors are becoming increasingly popular these days. And along with that has come a boom in accessories to attach suppressors to a gun. Quick detach (QD) mounts are probably some of the most prolific ways to attach a suppressor to a gun. But they’re not your only options. With some help from our friend Caleb Downing, we’ll take a look at two different ways to mount a suppressor to your gun in this video: taper mounts and tri lugs.

The Best of Both Worlds: Taper Mounts

First up: taper mounts. Taper mounts are one way to get suppressors onto your rifle. Think about them as a combination between direct threading and a QD system.



One of the most important parts of taper mounts is the tapering that they feature. This tapering helps seal up a suppressor and keeps the threads clean. This is a huge benefit because when threads get dirty, suppressors can get locked onto your gun. Since the main job of a suppressor is to contain expanding gasses, they tend to get pretty dirty.

Other Benefits of Taper Mounts

That’s not the only benefit of using a taper mount, though. Taper mounts also generally have some kind of coarse threading. This allows a user to quickly screw or unscrew a suppressor to them.

While you won’t be able to attach or detach a suppressor with a taper mount as quickly as you could using a QD system, taper mounts have a much simpler design. QD mounts need to use some kind of spring or detent system by design. These moving parts will eventually wear out, and at some point, you’ll need to replace them. That isn’t a problem with taper mounts, giving them a longer usage life than QD mounts.

Mounting a Muzzle Device to Pistol Caliber Carbines: Tri Lugs

Tri lugs are another option for mounting a suppressor to a firearm. Typically, you’ll find tri lugs on pistol caliber carbines (PCCs) like the MP5 or the CZ Scorpion. Tri lugs aren’t made for precision shooting. Instead, they’re intended more for close-up engagements.



Tri lugs aren’t as easy to use as a taper mount, though. That’s because each of the three positions on a tri lug mount will affect where your bullet goes. Caleb demonstrates how each position will affect your accuracy by putting some lead on paper.

The results are pretty shocking. While the first two positions were fairly accurate, the third position wasn’t even hitting in the same area code. This is why “clocking” your tri lug suppressor, or making sure you’ve attached it in the right position, is so critical.

Learn More About Firearms, Suppressors, and More at SDI

Are you fascinated by muzzle devices and other firearm accessories? At SDI, you can learn how to utilize the best muzzle devices on the market—and even gain the skills you need to build your own. To learn more about the programs we offer, click here.

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