Custom builder using Kynshot hydraulic buffer optimized .300 Blackout AR-15 with 16-inch barrel, demonstrating specialized subsonic-focused builds. Type: Rifle Action: Semi-Automatic Caliber: .300 Blackout Capacity: 30 Year introduced: 2018, USA Weight: 96 oz Overall length: 32" Status: Active Intended use: Suppressor Host, Precision Shooting