Griffin Armament HUB HRT-5K AM 5.56 Suppressor, 4.5", 1.375x24 HUB Mount Overview The Griffin Armament HUB HRT-5K(TM) AM is a compact, highly durable 5.56mm suppressor designed for users who want extremely low backpressure in a minimal form factor. Measuring approximately 4.5" long and weighing 11.5 oz., this hard-use suppressor was developed from Griffin's HRT-556(TM) AM platform and uses an ultra-low-backpressure baffle system designed to reduce gas blowback for both right- and left-handed shooters. Built using Griffin's proprietary Nickel 625X(TM) alloy and state-of-the-art SLM additive manufacturing technology, the HUB HRT-5K AM combines lightweight construction with high-temperature durability. The printed core is laser-welded to a machined rear section for warranty serviceability. The suppressor uses the industry-standard HUB mounting interface with 1.375x24 threads, allowing users to select a compatible mounting system based on their preferred setup. The suppressor does not include a muzzle device or HUB mount interface. Key Features Compact 4.5" overall length 5.56mm (.22 caliber) rifle suppressor HUB-compatible 1.375x24 threaded rear Ultra-low-backpressure baffle system Durable Nickel 625X(TM) alloy construction State-of-the-art additive manufacturing Printed core laser-welded to machined rear section Low-backpressure flash hider end cap Designed for minimal and repeatable point-of-impact shift Hard-use rifle and tactical design Full-auto rated Lightweight 11.5 oz. construction Perpetual Lifetime Warranty(TM) Specifications Brand: Griffin Armament Model: HUB HRT-5K(TM) AM Product Type: Rifle Suppressor Caliber: .22 Caliber (5.56mm) Mounting System: HUB (1.375x24) Overall Length: 4.51" Diameter: 1.5" Weight: 11.5 oz. Materials: 17-4 H900 Stainless Steel, Nickel 625X(TM) Suppressor Type: Hard Use, Low Backpressure, Rifle, Tactical User Serviceable: No Full Auto Rated: Yes Distance to Blast Baffle from Rear of Blind HUB Interface: 1.50" Sound Rating: -34.7 dB (137.3 dB on 12.5" MK2) Barrel Length Restriction: None for rifle calibers Color Variations Black Suppressor Color: Black Flat Dark Earth (FDE) Suppressor Color: Flat Dark Earth All specifications and included components are the same between the Black and FDE versions; only the exterior color varies. What's Included HUB HRT-5K(TM) AM Silencer (.22 Caliber / 5.56mm) Griffin-branded Silencer Pouch Important: HUB HRT-5K(TM) AM suppressors do not ship with a muzzle device or HUB Mount Interface. Compatible mounting components must be purchased separately. Applications The HUB HRT-5K(TM) AM is designed for compact rifle and tactical applications where minimizing overall size, weight, and backpressure is a priority. Its HUB mounting interface provides flexibility for users who want to select their preferred compatible mounting system. Note: Suppressors are regulated firearm accessories. Purchase, transfer, possession, and use are subject to applicable federal, state, and local laws and regulations. Please check out our special deals on 5.56mm ammo.