Yes, any device that muffles the sound of a firearm is considered a suppressor per the ATF and requires a tax stamp

The Vanquish 9 is offered in two barrel lengths, a 16″ and 10.5″. The 16″ barrel qualifies as a rifle and is therefore a single tax stamp. The 10.5″ barrel can be purchased as a SBR (2 tax stamps) or a pistol with brace (one stamp)

1. Checkout on our website. In the shipping to fields, enter in the information for your local dealer (gun store) that will facilitate the transfer of the item. In order to transfer class III items, the dealer must have a SOT in addition to a FFL. If you don’t know who you want to use, enter your billing address as the shipping and we can edit it later.
2. Once the license is received we submit a form 3 to transfer the item to your dealer. Once it is approved we ship the item to your local dealer.
3. At your local dealer you will complete the ATF form 4 and pay your $200 tax stamp.
4. Once approved you take the item home and enjoy it!

Purchase a stripped barrel & handguard

If you purchase a stripped barrel, you will also need to purchase a handguard with a larger ID to accommodate the suppressor shroud. Please see the “handguard compatibility” and “barrel installation instructions” sections on this page.

The Vanquish shroud is 1.5″ so the handguard needs to be larger than this dimension. Here is a list of handguards that meet the requirement.

We recommend our suppressor series handguards as they have the most usable mounting space and are sized at the the appropraite length.

• Angstadt Arms 9.3″ Suppressor Series Handguard – 1.7″
• Angstadt Arms 14.8″ Suppressor Series Handguard – 1.7″

Third party handguards. Please confirm the ID’s listed here with the manufacturer to ensure this data is correct.

• Aero GenII Handguards – 1.72″
• Seekins Precision SP3RV3 Rail System – 1.75″
• Seekins Precision MCSRV2 Rail System – 1.8″
• Lancer LCH5 GEN2 Handguard – 1.7″
• Yankee Hill Machine MR7 Handguard – 1.75″
• Maxim MDX – 1.8″
• Midwest Industries Suppressor Series – 1.67″ (M-LOK accessories may not fit)
• Odin Works O2 Lite – 1.6″ (M-LOK accessories will not fit)
• Odin Works Standard – 1.6″ (M-LOK accessories will not fit)

Depending on the handguard you choose, you may need to use shorter M-LOK screws when installing attachments. This will prevent the screws from coming into contact with the suppressor shroud. It’s worth noting that most screws provided with attachments are longer than necessary. Based on our experience, we have found that the Vanquish barrel and handguards with a minimum inside diameter of 1.72″ are generally compatible with most M-LOK accessories. Just remember to use shorter M-LOK screws for optimal fit.

If a QD sling connection is desired, we recommend using an M-LOK to QD connection.

The Vanquish complete upper is compatible with most AR9 lower receivers and mil-spec AR-15 receivers that use a mag block. Our upper receiver is precision-machined to meet internal mil-spec dimensions. Please note that the MP5 and CZ Scorpion magazines are wider than a standard upper receiver. If you intend to use either of these magazines, we recommend purchasing our 10.5″ Vanquish barrel or 16″ Vanquish barrel, along with an upper receiver specifically designed to accommodate these magazines. Contact us if you have any questions or need further assistance

Watch the installation video at the top of this page.

Installing the Vanquish 9 suppressed barrel is the same as a standard barrel. Start by aligning the index pin on the barrel extension with the slot in your upper receiver. Then, follow the instructions provided by the handguard manufacturer to install the barrel nut and handguard. Lastly, slide the shroud over the barrel and securely attach the end cap to the threaded section. For detailed assembly instructions, refer to the instruction manual provided

The biggest velocity drop will be achieved with all ports open. You can adjust your velocity by closing some or all of the ports. Watch the overview video at the top of this page for a detailed explanation on adjusting your velocity. Please note: the Vanquish 22 ports are not adjustable

Detailed test results can be found on the main Vanquish page. Please note, depending on test conditions (temperature, humidity, etc.) your results may differ slightly from day to day

No. +P or +P+ ammo is not recommended for use in any of our firearms

Yes, frangible ammunition can be used in the Vanquish

Please visit the Vanquish22 page to learn more about the Ruger 10/22 compatible Vanquish

No. The Vanquish 22 barrel is only compatible with the standard configuration 10/22 rifles

Yes. The Vanquish 22 barrel is only compatible with the standard Ruger 10/22 rifle and the Vanquish 22 Takedown is compatible with the 10/22 takedown rifle

We are actively seeking OEM opportunities for the Vanquish technology. If you are a firearms manufacturer please contact us to discuss opportunities

The Vanquish barrel is ported by design, and machining those ports leaves fine burrs in the bore — the same as the gas port on any AR-15 barrel. We don’t remove them at the factory because deburring the bore requires a long rotary tool that can damage the rifling and hurt accuracy. The fix is simple: fire 5–10 rounds and the burrs clear on their own. This is normal and not a defect.