B&TXH-556 SC
5.56mm / .223 suppressor · HUB 1.375x24 interface · specs and compatibility from the manufacturer
Notable features
- HUB Compatible
- No Barrel Restrictions
length
5″
weight
8.6oz
length
5″
weight
8.6oz
calibers
5.56
material
Titanium
interface
HUB 1.375x24
- Overall length
- 5″
- Class
- 5.56mm / .223
- n
- 328
- Range
- 2.5″–9.75″
- Median
- 6.12″
- Diameter
- 1.75″
- Class
- 5.56mm / .223
- n
- 328
- Range
- 0.98″–2.2″
- Median
- 1.57″
- Weight
- 8.6 oz
- Class
- 5.56mm / .223
- n
- 328
- Range
- 1.7 oz–27 oz
- Median
- 13 oz
- Material
- Titanium
- Max caliber
- 5.56mm / .223
- Base interface
- HUB 1.375x24
- Front cap
- none
- Barrel restriction
- None (manufacturer stated)
Shorter than most 5.56mm / .223 suppressors
Length compared against the 328 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Wider than most 5.56mm / .223 suppressors
Diameter compared against the 328 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Lighter than most 5.56mm / .223 suppressors
Weight compared against the 328 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Not published by the manufacturer: MSRP.
- Base interface
- HUB 1.375x24
- Front cap
- none
The HUB 1.375x24 is an open standard: 415 mounts and 818 muzzle devices in our catalog fit this suppressor, including B&T Direct Thread HUB Lightweight 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 BuilderManufacturer claim
- Reduced Backpressure System (RBS): Minimizes gas blowback, limiting bolt speed spikes to ensure reliable operation.
- Low-Flash Endcap: Suppresses muzzle flash to maintain situational awareness in close quarters or low-light conditions.
- Compact Hybrid Configuration: Titanium body for weight savings plus an Inconel blast baffle for added resilience under heavy heat.
- Weldless 3-D Printed Design: Removes traditional weak points, boosting reliability in extreme use.
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- Engineered for operators who value both maneuverability and advanced gas control, the XH-556 SC merges an ultra-compact 3D printed titanium tube with a robust 718 Inconel blast baffle—perfectly tailored for the higher pressure demands of 5.56 / .223 firearms.
- No Barrel Length Restrictions: Engineered for full-auto use and ensures flexibility across firearm platforms. Optimized for 14.5-inch and longer carbines, while performing flawlessly on shorter barrels.
- User-Friendly Mounting: Compatible with 1.375×24 TPI HUB interfaces and wrench flats for quick, tool-friendly attachment or removal.