Fire Inferno is one of Harrows' CNC-machined tungsten barrels, built around a front-tapered profile with bi-lateral milling and reverse ring cuts running the barrel's full length — Harrows calls it the "fire effect" grip sequence. It's 90% tungsten, coated in black titanium nitride with vivid metallic red detailing for a striking three-colour finish. Weight sits centred through the barrel for a balanced, neutral release.