Product Description The Biz Raptor Invector choke tube from Rob Roberts Gun Works is engineered to deliver consistent, hard-hitting patterns with bismuth or lead shot. Built from 17-4 PH U.S. stainless steel and refined through years of development in the RRaptor Series, this 12-gauge choke offers durable performance and reliable precision. Designed for Invector-compatible shotguns, it is a strong upgrade for shooters seeking tighter, more uniform patterns. Note: Over/under shotguns can have an RRaptor choke installed in only one barrel due to the choke&';s design. Product Highlights Optimized for bismuth and lead shotshells to produce tight, consistent patterns Fits Invector choke systems for easy installation and reliable performance Constructed from 17-4 PH stainless steel for strength, durability, and corrosion resistance Part of the proven RRaptor Series, developed using advanced manufacturing technology Ideal upgrade when pairing bismuth shot with a dedicated choke Specs Gauge: 12 Gauge Choke System: Invector Series/Model: RRaptor Series - Biz Material: 17-4 PH stainless steel Compatible Shot: Lead or Bismuth UPC: 810174901924 MPN: 200283 Brand Name: Rob Roberts Gun Works Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.