Griffin Armament HUB HRT-556 AM 5.56mm Suppressor Overview The Griffin Armament HUB HRT-556 AM is an ultra-low-backpressure 5.56mm suppressor engineered for demanding use. Its additively manufactured Nickel 625X core provides excellent high-temperature durability, while the HUB-compatible rear interface allows flexible mounting on compatible rifle platforms. The suppressor is designed to reduce sound, flash, recoil impulse, and gas blowback while maintaining accuracy. Key Features Ultra-low-backpressure design benefits both left- and right-handed shooters Additively manufactured Nickel 625X superalloy core High-performance flash-hider end cap Laser-welded core and machined rear for warranty serviceability Designed for minimal point-of-impact shift Full-auto rated for demanding firing schedules Perpetual Lifetime Warranty from Griffin Armament Specifications Manufacturer: Griffin Armament Model: HUB HRT-556 AM Type: Rifle suppressor Caliber: .22 caliber / 5.56mm Mounting Interface: HUB, 1.375A-24 Materials: 17-4 H900 stainless steel and Nickel 625X Length: 5.55 inches Diameter: 1.5 inches Weight: 14.0 ounces Sound Reduction: 36.6 dB Full-Auto Rated: Yes MPN: GAHUBHRTAM-W UPC: 631465977295 Applications Ideal for 5.56 NATO rifles, carbines, range training, duty-oriented builds, and hard-use platforms where low backpressure and reliable sound and flash reduction are priorities. Additional Features The universal HUB rear interface accepts Griffin Armament HUB adapters and compatible third-party inserts, allowing users to configure the suppressor for their preferred mounting system. Each suppressor includes a branded Griffin silencer pouch.