B&T XH-556 SC Suppressor

5.56 NATO / .223 · 5" · 3D-Printed Titanium · 718 Inconel Blast Baffle · RBS · HUB + RAID Mount · Gray · NFA The B&T XH-556 SC is a subcompact 5.56/.223 suppressor merging 3D-printed titanium tube with 718 Inconel blast baffle. Reduced Backpressure System (RBS) keeps bolt-speed increases under 2%—extends component life and minimizes blowback toward the shooter. Low-flash endcap suppresses muzzle flash for close-quarters and low-light conditions. HUB interface compatible (1.375x24 TPI) with wrench flats for tool-friendly attachment. RAID Taper Mount/Muzzle Device included. No barrel length restrictions—full-auto rated. Optimized for 14.5" and longer carbines, performs on shorter barrels. SOCOM Burn Down tested: 240 rounds × 95 repeated cycles equating to 22,000+ rounds fired during final testing. Weldless 3D-printed design removes traditional weak points. 8.6 oz. 5" length. 1.75" diameter. Gray. Type 2 anodized finish. UPC: 840225717266. NFA item.

Hybrid Titanium / 718 Inconel Construction

3D-printed titanium tube provides lightweight construction at 8.6 oz. 718 Inconel blast baffle handles focused muzzle-flash control and added resilience under heavy heat and rapid firing sequences. The hybrid pairing delivers weight savings without sacrificing durability at the highest-pressure point.

Reduced Backpressure System (RBS)

B&T's Reduced Backpressure System keeps bolt-speed increases under 2%. The RBS minimizes gas blowback toward the shooter, extends component life, and ensures reliable operation across firing schedules on 5.56 platforms.

Low-Flash Endcap

Redesigned low-flash endcap suppresses muzzle flash to maintain situational awareness in close-quarters and low-light conditions. The endcap design addresses flash signature that conventional suppressor designs leave unaddressed.

SOCOM Burn Down Tested

240 rounds × 95 repeated cycles—22,000+ rounds fired during final testing phase. The SOCOM Burn Down test represents one of the most demanding suppressor endurance protocols in the industry.

No Barrel Length Restrictions

No barrel length restrictions—full-auto rated across firearm platforms. Optimized for 14.5" and longer carbines while performing on shorter barrels, including SBR and PDW configurations.

HUB Interface Compatible

Compatible with 1.375x24 TPI HUB interfaces. Wrench flats provide tool-friendly attachment and removal. The HUB compatibility allows use with existing HUB-compatible muzzle devices.

RAID Taper Mount Included

Ships with RAID Taper Mount/Muzzle Device. The RAID mount provides secure, repeatable suppressor attachment with positive lockup and low POI shift.

Weldless 3D-Printed Design

Weldless 3D-printed construction removes traditional weak points associated with welded baffles. The single-piece design eliminates failure points and maintains structural integrity under extreme heat cycling.

Subcompact Form Factor

5" length and 1.75" diameter maintain agile, subcompact form for quick transitions and close-quarter maneuverability. The compact footprint minimizes overall weapon length on SBR and PDW platforms.

Type 2 Anodized Gray Finish

Type 2 anodized gray finish provides corrosion resistance and surface hardness. The gray finish coordinates with gray-configured weapon systems.

NFA Item

NFA-regulated item. Requires completion of NFA tax stamp process and transfer through licensed Class III FFL dealer. The B&T XH-556 SC delivers subcompact 5.56 suppression—3D-printed titanium with 718 Inconel blast baffle, RBS, and SOCOM-proven durability in 5" gray construction.

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Specifications:

• Manufacturer: B&T
• Model: XH-556 SC
• SKU: SD-556RBS-SC-Ti
• UPC: 840225717266
• Caliber: 5.56 NATO / .223 Remington
• Configuration: Subcompact Hybrid
• Tube Material: 3D-Printed Titanium
• Blast Baffle Material: 718 Inconel
• Construction: Weldless 3D-Printed
• Technology: Reduced Backpressure System (RBS)
• Bolt Speed Increase: Under 2%
• Endcap: Low-Flash
• Length: 5 inches
• Diameter: 1.75 inches
• Weight: 8.6 oz
• Color: Gray
• Finish: Type 2 Anodized
• Attachment: HUB Interface Compatible (1.375x24 TPI)
• Mount Included: RAID Taper Mount / Muzzle Device
• Barrel Restrictions: None
• Full-Auto Rated: Yes
• Optimized For: 14.5" and Longer (Functions on Shorter Barrels)
• Testing: SOCOM Burn Down (240rd x 95 Cycles = 22,000+ Rounds)
• NFA Status: NFA-Regulated (Tax Stamp Required)
• Transfer: Class III FFL Required