JK Armament 172 PRO-KOR 556K 5.56mm Suppressor, FDE The JK Armament 172 PRO-KOR 556K is a compact dedicated 5.56mm rifle suppressor with a durable steel-and-superalloy construction. It pairs a printed suppressor structure with a purpose-matched mounting system for a complete, clearly defined application. The FDE suppressor includes a taper mount and 1/2x28 War Eagle muzzle device. Its 1.72-inch outside diameter and fixed overall form make mounted dimensions important when planning clearance and handling. Choose the 172 PRO-KOR 556K 5.56mm Suppressor, FDE at BattleHawk Armory. Additive Manufacturing and Internal Geometry The PRO-KOR uses additive manufacturing to create its internal suppression geometry in 17-4 stainless steel and haynes 282. That manufacturing approach supports complex internal gas paths within the 1.72-inch body. The combination of stainless steel and Haynes 282 is suited to the heat and pressure environment of a dedicated 5.56mm suppressor. Know the Complete Mounted Size Overall length is 6 inches with the mount and 5.35 inches without it. Weight is 15.5 ounces mounted and 14.3 ounces without the mount. Distinguishing those measurements helps when comparing the complete firearm setup, because the mount contributes to both length and mass. The FDE Cerakote finish provides the exterior color and surface protection. Included Mounting System The suppressor includes a taper mount and 1/2x28 War Eagle muzzle device. The War Eagle supplies the barrel-side connection at 1/2x28, and the taper mount engages that muzzle device from the suppressor. The mount is made from Grade 5 titanium. Choose the Correct Host The suppressor is full-auto rated within its approved 5.56mm applications. Confirm the cartridge, barrel, muzzle-device bore, and complete mounting arrangement. The included barrel thread is a connection specification, not a blanket statement that every firearm with that thread is suitable. Gas Flow and Flash Performance The PRO-KOR design addresses sound reduction together with gas and flash management. Those characteristics matter when selecting a suppressor for a semiautomatic rifle, but the resulting performance depends on barrel length, ammunition, and host behavior. The suppressor should be evaluated as part of the complete firearm system. Product Specifications Manufacturer: JK Armament Model: 172 PRO-KOR 556K Caliber class: 5.56mm Color: FDE Construction: 17-4 stainless steel and Haynes 282 Manufacturing approach: Additive manufacturing Diameter: 1.72 inches Length with mount: 6 inches Length without mount: 5.35 inches Weight with mount: 15.5 ounces Weight without mount: 14.3 ounces Mount material: Grade 5 titanium Finish: Cerakote Included mounting components: taper mount and 1/2x28 War Eagle muzzle device Frequently Asked Questions What mounting system is included? A taper mount and 1/2x28 War Eagle muzzle device is included. Do the length and weight include the mount? The mounted measurements are 6 inches and 15.5 ounces. Without the mount, the measurements are 5.35 inches and 14.3 ounces. Is it made entirely from titanium? No. The suppressor uses 17-4 stainless steel and Haynes 282, with a Grade 5 titanium mount. Can the baffle count be adjusted to shorten it? The printed PRO-KOR structure has a fixed body form; it is not a removable-baffle length-adjustment system. Shop the 172 PRO-KOR 556K 5.56mm Suppressor, FDE at BattleHawk Armory.