Quarter Circle 10 .40 SW Barrel 5.5in .578-28 Thread Black Nitride

Quarter Circle 10 .40 SW Barrel 5.5in .578-28 Thread Black Nitride. 40 S&W barrels are threaded for the attachment of flash hiders suppressors and accessories and finished with a nearly indestructible protective treatment. Barrels have a medium outer profile and come in a variety of lengths to suit any need. Note: Barrels are measured from the end of the muzzle to the end of the breech/feed ramp. Approximately 1? of the barrel rests inside the upper receiver upon installation resulting in an installed length of 1? less than listed overall length. The installation of a pistol-caliber suppressor requires the use of a fixed barrel spacer. See your suppressor manufacturer for information on the requirements of your particular model. Specifications for Quarter Circle 10 .40 SW Barrels: Manufacturer: Quarter Circle 10 Color: Black Nitride Finish: QPQ Nitride Fabric/Material: 4150 CMV Steel Caliber: .40 S&W Barrel Length: 5.5 in Barrel Profile: Medium Threads per Inch: 5/8x24 Barrel Twist Rate: 1-16 Gun Make: AR Platform Gun Model: QC10 Blu' Whistler QC5 QC10 Rider QC10 Ranger Weight: 10 oz Additional Features: 5.5in .578-28 Thread Features of Quarter Circle 10 .40 SW Barrels: .75 (medium) profile Note: Barrels are measured from the end of the muzzle to the end of the breech/feed ramp Approximately 1 of the barrel rests inside the upper receiver upon installation resulting in an installed length of 1 less than listed overall length. The installation of a pistol-caliber suppressor requires the use of a fixed barrel spacer See your suppressor manufacturer for information on the requirements of your particular model. Package Contents: Quarter Circle 10 .40 SW Barrels What firearm models does the manufacturer say Quarter Circle 10 .40 SW Barrels is compatible with? The manufacturer says that Quarter Circle 10 .40 SW Barrels is compatible with QC10 Ranger QC10 Rider QC5 QC10 Blu' WhistlerQuarter Circle 10 QC-BRL-40-5.5: .40 SW Barrel 5.5in .578-28 Thread Black Nitride