Product Description Upgrade your S&W M&P Shield to a suppressor-ready host with the SilencerCo AC2290 threaded pistol barrel. Built to SilencerCo&';s quality standards, this drop-in replacement barrel is made from durable 416R stainless steel and finished in black nitride for enhanced wear and corrosion resistance. It features a 1/2x28 right-hand thread and includes a thread protector to help safeguard the muzzle threads when not in use. For suppressed use, a compatible piston is also required. Product Highlights Threaded 9mm Luger pistol barrel designed to fit the S&W M&P Shield Made from 416R stainless steel for strength and long-term durability Black nitride finish helps resist wear and corrosion under hard use 1/2x28 right-hand muzzle threading for common 9mm pistol suppressor mounts Includes thread protector to help protect muzzle threads when unsuppressed Specs Brand: SilencerCo Manufacturer Part Number: AC2290 UPC: 816413022573 Caliber: 9mm Luger (9x19) Barrel Length: 3.50 in Material: 416R Stainless Steel Finish: Black Nitride Muzzle Thread: 1/2x28 RH Twist Rate: 1:10 RH Compatibility: Fits Smith & Wesson M&P Shield Included: Thread Protector Weight: 0.25 lb 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.