EchoCore Sector 5.56 Full Size Suppressor

The EchoCore Sector 5.56 Full Size is a hard-use, low-backpressure 5.56 suppressor designed for shooters who prioritize sound suppression, gas control and durability. Built from DMLS 3D-printed Inconel and rated for full-auto fire, the Sector 5.56 Full Size is optimized for 5.56 NATO and 6 ARC rifles.

At 7.06 inches long and 18 ounces, the Full Size Sector uses its additional internal volume to provide greater gas dwell time and excellent suppression, particularly on short-barreled AR platforms. EchoCore specifically optimizes the Full Size for 10.5- to 12.5-inch barrels, while it remains an excellent option for standard-length 5.56 rifles.

Award-Winning 5.56 Suppression

The EchoCore Sector 5.56 Full Size earned first place in the 5.56 category at the 2025 Silencer Summit for Shooter's Ear LEQ performance.

That performance makes the Sector 5.56 particularly interesting for shooters looking for a premium 5.56 suppressor that combines excellent sound performance with reduced gas blowback.

EchoCore XCR Technology

At the heart of the Sector 5.56 is EchoCore's proprietary XCR (Cross Chamber Regulation) technology combined with a long-form helicoidal, or spiral, baffle structure.

Rather than allowing expanding gases to dump abruptly through the suppressor, the XCR system is designed to regulate pressure across multiple chambers. The extended spiral gas path increases dwell time while helping control backpressure and reduce gas blowback to the shooter.

A low-flash vented endcap is standard.

3D-Printed Inconel Construction

The Sector 5.56 Full Size is DMLS 3D printed from Inconel as a completely weldless suppressor. This construction provides the heat resistance and durability expected from a hard-use rifle suppressor while allowing EchoCore to manufacture its complex internal geometry.

The suppressor is finished with EchoCore's high-temperature, non-reflective coating and is full-auto rated.

HUB Compatible

The EchoCore Sector 5.56 uses the industry-standard 1.375x24 HUB mounting interface, giving shooters considerable flexibility when selecting a mounting system.

A 1/2x28 direct-thread mount is included, so the suppressor can be installed directly on compatible 5.56 rifles without purchasing an additional mount.

EchoCore Sector 5.56 Full Size Specifications

  • Caliber: 5.56 NATO / 6 ARC

  • Length: 7.06"

  • Diameter: 1.75"

  • Weight: 18 oz

  • Material: DMLS 3D-printed Inconel

  • Construction: Weldless

  • Internal Design: XCR technology with long-form helicoidal baffle system

  • Mount: HUB 1.375x24

  • Included Mount: 1/2x28 direct thread

  • Rating: Full-auto rated

  • Optimized Barrel Length: 10.5–12.5"

  • Endcap: Low-flash vented design

EchoCore Sector 5.56 for Sale at Liberty Armory

The EchoCore Sector 5.56 Full Size suppressor is available from Liberty Armory, an FFL/SOT suppressor dealer in South Carolina. We ship eligible suppressor orders nationwide to the buyer's receiving FFL/SOT and also offer local pickup by appointment in Chapin, SC.

If you're comparing premium 5.56 suppressors and want excellent sound suppression, low-backpressure performance, Inconel durability and HUB mounting compatibility, the EchoCore Sector 5.56 Full Size deserves serious consideration.

Contact Liberty Armory for current availability, mounting options and suppressor transfer information.

Available In-Store Now
Free in-store pickup today at Store
Ship To Another Dealer (FFL)
Choose the dealer at checkout