Specifications:

• Easy to install drop-in design.
• Advanced proprietary broach cut design specifically engineered for increased accuracy potential.
• Broach cut 6 groove rifling allows for all ammo types to be used safely, including cast lead.
• 100% Designed and manufactured in the USA with USA sourced certified 416R stainless steel.
• 9mm 1/10RH twist rifling.
• Special deep style target crown for non-threaded versions or 1/2x28 threads with included thread protector on threaded versions.
• Threaded versions include Viton high heat integral O-ring lock thread protector.
• SAAMI spec chamber.
• Improved overall fit from OEM with added chamfers, improved radius cuts, and other additions for a better than OEM barrel.
• Lifetime performance warranty on function. 
• Barrel Length: 3-1/2"
• Barrel Thread Pitch: 1/2" x 28