ECHOCORE Sector 556 – Full Size

The Sector 5.56 FS is among the quietested 5.56 silencers we’ve tested — optimized for SBRs and battle rifles that demand top-tier sound and gas control. Its long-form Inconel body and XCR baffles reduce blowback, recoil, and flash, keeping short-barreled rifles cleaner, cooler, and quieter through sustained fire.

Quick Hits

• 18 oz — 7.06 in Length — 1.75 in Diameter

• 5.56 / 6 ARC rated

• 3D-printed Inconel, weld-free

• HUB (1.375×24) or 1/2×28 direct thread

• XCR helix baffles for smooth cycling

• Low-flash vented endcap

• Full-auto rated — no barrel restrictions