The EchoCore Topo 22 Rimfire Suppressor, 1/2×28 Titanium is an ultra-compact, ultra-lightweight can additively manufactured from 3D-printed titanium. EchoCore engineered it for shooters who want minimal size and weight without giving up durability, and says it improves host handling while keeping sound suppression strong. A low-backpressure end cap promotes reliable cycling and cuts gas blowback at the shooter, and wrench flats at the base of the tube make mounting and removal straightforward. The raised topographic surface texture also stiffens the tube sidewalls. It is aimed at hunters, recreational shooters and lightweight rifle builds.

Key Specifications

• The rating is .22 LR, .22 Magnum and 5.7x28mm, with limited semi-auto use on .223 Rem and 5.56 NATO.
• The mount is direct thread 1/2×28, the common rimfire muzzle thread.
• Construction is weldless 3D-printed titanium, which gives strength and corrosion resistance at low weight.
• Weight is 4 ounces, so it adds little to a rimfire host.
• Length is 5.1 inches, compact enough for a lightweight rifle build.

Frequently Asked Questions

Can I shoot 5.56 through the Topo 22? EchoCore lists limited semi-automatic use on .223 Remington and 5.56 NATO for specialized applications, with .22 LR, .22 Magnum and 5.7x28mm as the primary calibers.

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.

Buy the EchoCore Topo 22 Rimfire Suppressor, 1/2×28 Titanium

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 EchoCore’s suppressor lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer.