ECHOCORESector 5.56 Compact
6mm / 6.5mm suppressor · HUB 1.375x24 interface · specs and compatibility from the manufacturer
Notable features
- HUB Compatible
- TBAC Summit Tested
- Full-Auto Rated
length
5.11″
weight
12.9oz
MSRP
$1,049
length
5.11″
weight
12.9oz
calibers
5.56 | 6.5
material
Inconel
interface
HUB 1.375x24
MSRP
$1,049
- Overall length
- 5.11″
- Class
- 6mm / 6.5mm
- n
- 123
- Range
- 3″–9.7″
- Median
- 6.15″
- Diameter
- 1.75″
- Weight
- 12.9 oz
- Material
- Inconel
- Max caliber
- 6mm ARC
- Base interface
- HUB 1.375x24
- Front cap
- none
- Full-auto rated
- Yes
- MSRP
- $1,049
Shorter than most 6mm / 6.5mm suppressors
Length compared against the 123 6mm / 6.5mm suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Prices are manufacturer's suggested retail (MSRP). What you pay may differ.
- Base interface
- HUB 1.375x24
- Front cap
- none
The HUB 1.375x24 is an open standard: 468 mounts and 882 muzzle devices in our catalog fit this suppressor, including ECHOCORE Direct Thread Adapter (1/2x28), AAC 51T S.T.A.M.P. Mount and AB Suppressor AB Raptor Adapter. You aren't locked into one manufacturer's parts.
Which ones fit your barrel and host?
Check in the BuilderThe Thunder Beast Silencer Summit fires every suppressor entered on the same gun, with the same equipment. Sector 5.56 Compact was measured in 1 test. Figures can only be compared with others from the same test, so each one links to everything else fired on that gun.
Gas-operated rifles and carbines
Measurements published by Thunder Beast Arms Corp. How to read these
Manufacturer claim
- Caliber: 5.56 NATO / 6ARC
- Restrictions: Full Auto Rated
- It also secured second place at the 2025 Silencer Summit in the 5.56 category based on Shooter’s Ear LEQ dBA measurements — one of the most respected independent benchmarks in the suppressor world.
- HUB Compatible (1.375x24 TPI)
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- Reduced Backpressure Helicoidal Baffles
- Low-flash, Vented Endcap
- Optimized For 14-inch+ Barrels; Excels On SBR's
- THE FIGHTING RIFLE SILENCER The EchoCore Sector 556 Compact is an award-winning suppressor that has already earned significant recognition across the industry.
- Most recently, it received the prestigious 2025 On-Target Magazine Editor’s Choice Award for its outstanding performance.
- Engineered for 5.56mm/6ARC platforms, the Sector 556 Compact is purpose-built for short 14-inch and longer barreled rifles, yet excels on short and lightweight carbines where speed, control, and reliability matter most.
- DMLS 3D Printed of Inconel
- Completely Weldless Design
- Treatment: Proprietary High-Temp, Non-Reflective Coating
- Together, these honors reinforce what shooters quickly discover behind the trigger: the Sector 556 Compact delivers elite-level suppression and performance in a compact, hard-use package.
- Interface: HUB (1.375x24 TPI); 1/2x28 Direct Thread (included)
