Killer Innovations Velocity For Sig P320 X-Compact Pistol Barrel MDC Gray. Every barrel is machined with an 11 target crown for greater accuracy and coated with high-quality finishes ensuring the most accurate reliable barrels available on the market today. Specifications for Killer Innovations Velocity For Sig P320 X-Compact Non-Threaded Pistol Barrel: Manufacturer: Killer Innovations Caliber: 9mm Luger Gun Make: SIG Sauer Gun Model: SIG Sauer P320 X-Compact Barrel Length: 3.6 in Barrel Material: 416R Stainless Steel Barrel Twist Rate: 1-10 Flutes: No Condition: New Country of Origin: USA Package Contents: Killer Innovations Velocity For Sig P320 X-Compact Non-Threaded Pistol Barrel What firearm models does the manufacturer say Killer Innovations Velocity For Sig P320 X-Compact Non-Threaded Pistol Barrel is compatible with? The manufacturer says that Killer Innovations Velocity For Sig P320 X-Compact Non-Threaded Pistol Barrel is compatible with SIG Sauer P320 X-CompactKiller Innovations SIGBT404GRY: Velocity For Sig P320 X-Compact Pistol Barrel MDC Gray