Griffin Armament HUB HRT-556 AM 5.56mm HUB Suppressor, 1.375x24 TPI Mount, Full-Auto Rated, Low Backpressure Overview: The Griffin Armament HUB HRT-556 AM is a 5.56mm suppressor engineered around Griffin's industry-standard HUB mounting interface, giving end users the flexibility to configure the can with any Griffin HUB mount adapter or compatible third-party insert. This iteration of the HRT-556 line is built for ultra-low backpressure performance under hard use, combining durable 17-4 H900 stainless steel with Griffin's proprietary Nickel 625X alloy. The HUB HRT-556 AM is full-auto rated, making it suited for sustained-fire applications. Key Features: HUB Mounting System: 1.375x24 TPI rear interface compatible with Griffin HUB mount adapters and other manufacturer inserts. Ultra-Low Backpressure Design: Prioritizes reduced backpressure for hard-use reliability. Full-Auto Rated: Suitable for use on full-auto platforms. Advanced Materials: Constructed from 17-4 H900 stainless steel and Nickel 625X alloy. Includes: HUB HRT-556 AM, Branded Griffin Silencer Pouch Specifications: Manufacturer: Griffin Armament Model: HUB HRT-556 AM Caliber Compatibility: 5.56mm Mount Type: HUB Thread Pitch: 1.375x24 Materials: 17-4 H900 stainless steel, Nickel 625X Sound Reduction: 36.6 dB Weight: 14.0 ounces Full-Auto Rated: Yes Applications: Ideal for tactical use, duty rifles, and high-round-count training where low backpressure and full-auto durability are priorities. Additional Features: The HUB threaded rear interface allows shooters to adapt the HRT-556 AM across multiple hosts and mount configurations using Griffin's HUB ecosystem or other manufacturers' compatible inserts. *Does not include Hub Mount Interface MPN: GAHUBHRTFDEAM-W UPC: 631465977301 Check out our special deals on 5.56mm Ammo.