EchoCore Sector 5.56 Compact Suppressor

The EchoCore Sector 5.56 Compact is a short, hard-use 5.56 suppressor designed for shooters who want strong sound suppression and low backpressure without the length and weight of a full-size rifle suppressor.

At only 5.11 inches long and 12.9 ounces, the Sector 5.56 Compact combines DMLS 3D-printed Inconel construction with EchoCore's proprietary XCR technology in a compact, full-auto-rated package. It is rated for 5.56 NATO and 6 ARC and is especially well suited to 14-inch and longer barrels.

High-Performance Suppression in a Compact Package

Despite its 5.11-inch length, the EchoCore Sector 5.56 Compact placed second in the 5.56 category at the 2025 Silencer Summit for Shooter's Ear LEQ performance. It also received the 2025 On-Target Magazine Editor's Choice Award.

That combination of compact dimensions, sound performance and reduced backpressure makes the Sector Compact an attractive option for AR-15 owners who don't want the additional length of a traditional full-size 5.56 suppressor.

EchoCore XCR Technology

The Sector 5.56 Compact uses EchoCore's proprietary XCR (Cross Chamber Regulation) technology combined with a precision helicoidal, or spiral, internal structure.

The XCR system is designed to regulate pressure across multiple chambers while the spiral gas path increases dwell time. The result is controlled gas flow intended to provide effective suppression while reducing backpressure and gas blowback compared with many conventional baffle designs.

A low-flash vented endcap helps manage visible flash at the muzzle.

3D-Printed Inconel Construction

The Sector 5.56 Compact is DMLS 3D printed from Inconel in a completely weldless design. This gives the suppressor the heat resistance and durability needed for hard-use rifle applications while allowing EchoCore to manufacture its complex internal geometry.

The Sector Compact is full-auto rated and weighs just 12.9 ounces.

HUB Compatible

The EchoCore Sector 5.56 Compact uses the industry-standard 1.375x24 HUB mounting interface, providing compatibility with a wide variety of mounting systems.

A 1/2x28 direct-thread mount is included, allowing it to be installed directly on compatible 5.56 rifles without purchasing an additional mount.

EchoCore Sector 5.56 Compact Specifications

  • Caliber: 5.56 NATO / 6 ARC

  • Length: 5.11"

  • Diameter: 1.75"

  • Weight: 12.9 oz

  • Material: DMLS 3D-printed Inconel

  • Construction: Weldless

  • Internal Design: XCR technology with helicoidal gas-flow system

  • Mount: HUB 1.375x24

  • Included Mount: 1/2x28 direct thread

  • Rating: Full-auto rated

  • Optimized Barrel Length: 14" and longer

  • Endcap: Low-flash vented design

EchoCore Sector 5.56 Compact for Sale at Liberty Armory

The EchoCore Sector 5.56 Compact 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 offer local pickup by appointment in Chapin, SC.

For shooters looking for a compact 5.56 suppressor that combines Inconel durability, low-backpressure performance, HUB compatibility and excellent sound suppression, the EchoCore Sector 5.56 Compact offers an impressive balance of size, weight and performance.

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

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