The Carlson's Choke Tubes 09215 Bismuth Bone Buster Benelli/Beretta MobilChoke 20 Gauge Extended Range uses durable 17-4 stainless steel to deliver reliable performance in extended-range constriction of .040 for a precise, tighter pattern. Designed for Benelli and Beretta Mobil configurations, this one-choke setup optimizes the 20 gauge platform with an Extended Range choke, helping hunters achieve longer, more consistent patterns at practical distances while preserving shot integrity. Its stainless construction resists corrosion and stands up to field use, ensuring enduring accuracy season after season. The Bone Buster designation hints at its purpose for demanding upland and waterfowl scenarios where dense chokes and rugged build quality matter. With Carlsons reputation for precision-tuned choke tubes, this model integrates smoothly with compatible barrels to improve pattern density, enhancing hit probability on bird flushing points or distant targets. Whether upgrading an existing setup or building a dedicated 20 gauge configuration, this MobilChoke extension provides dependable performance, straightforward maintenance, and the versatility to tackle a range of field challenges with confidence.