The Maxim Defense Quantum 22K is a 3D-printed titanium suppressor for .22 LR platforms (Maxim Defense part no. 49353). It is part of the MSX Quantum series, re-engineered for metal 3D printing to optimize internal geometry, reduce weight and keep the design compact. It weighs 2.89 ounces and measures 4.5 inches, about 1.5 inches shorter and half an ounce lighter than the MS:22. A built-in 1/2-28 direct-thread mount keeps setup simple. It suits rimfire rifles and pistols where weight matters.

Key Specifications

• The caliber rating is .22 LR, with .17 HMR and .22 Mag also listed by Maxim.
• Overall length is 4.5 inches, compact for a rimfire suppressor.
• Weight is 2.89 ounces, light enough to barely change a rifle’s balance.
• Outer diameter is 1.0 inch, slim enough to fit under most handguards.
• The material is titanium, a strong, lightweight material that is fully 3D printed.
• The mount is a built-in 1/2-28 direct thread, no adapter needed.
• The finish is Cerakote, a durable coating.
• Sound is rated at 108 dB at the shooter’s left ear, measured on a Ruger American .22 LR bolt-action.
• There are no barrel restrictions, so it works on a range of rimfire barrels.
• It uses M-Kore technology in its internal geometry, adapted for 3D printing.

Frequently Asked Questions

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

What calibers can it be used on? Maxim lists .22 LR, .17 HMR and .22 Mag for the Quantum 22K.

How does it mount? It has an integrated 1/2-28 direct-thread mount, so it screws straight onto a compatible threaded muzzle.

Buy the Maxim Defense Quantum 22K Suppressor

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through Maxim Defense’s suppressors lineup and our Lubbock, Texas team will handle the transfer and it ships fast to your Class 3 dealer.