"Ideal for hunting in thick brush or tactical use in tight urban confines, the Nosler SR-30K ALTi DT Suppressor delivers robust 21dB noise reduction in an incredibly compact footprint. It's made from a combination of titanium and aluminum, delivering strength where it's required and weight reduction where you need it. It's just 5.8"" long and 7.2 ounces overall, making it the perfect choice for hunters and shooters who demand maneuverability above all. Optimized for bolt-action and semi-auto rifles, it mounts over a Nosler muzzle brake (not included) or attaches directly to 5/8""-24 threads via the included adapter. Minimum recommended barrel length is 12"" for anything under .308 Winchester, 18"" for anything over .308 Winchester. Note: Not rated for full-auto fire. Lightweight aluminum and titanium construction Just 5.8"" long, 1.74"" in diameter, and 7.2 ounces Works with calibers from .17 to .308, including .300 BLK, .308 Win., and 7.62x39mm Optimized for bolt-action and semi-auto rifles 21dB noise reduction Mounts over a Nosler muzzle brake (not included) or attaches to 5/8""-24 threads via included adapter"