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Questions & Answers
Ate these barrels rated for full auto and suppressed? Expert Answer

The manufacturer does state that the Quarter Circle 10 9x19mm Barrels can be used with a suppressor but do not state if it is rated for full auto rates of fire. For that information I recommend contacting the manufacturer.

by Hunter, Gear Expert, May 23, 2022
Is there a feed ramp? Expert Answer

Yes, the Quarter Circle 10 9x19mm Barrels have a proprietary designed feed ramp specifically designed for 9mm ammo.

by Hunter, Gear Expert, August 5, 2022
Color: Black Nitride Finish: QPQ Nitride Fabric/Material: 4150 CMV Steel Caliber: 9mm Luger Barrel Length: 5.5 inBarrel Profile: Medium Threads per Inch: 1/2x28 Barrel Twist Rate: 1-10 Gun Make: AR Platform Gun Model: QC5 , QC10 Blu' Whistler , QC10 Ranger , QC10 Rider Weight: 10 ozAdditional Features: 5.5in Condition: New

Code: 3KL-ATB-919B-QC-BRL-9-5-5

MPN: QC-BRL-9-5.5

Product No Longer Available

Product Info for Quarter Circle 10 9x19mm Barrels

These 9mm barrels from Quarter Circle 10 are constructed from 4150 CMV steel for maximum ruggedness. The thread pitch of these 9mm barrels is 1/2x28 which can mount on most auto-loading pistol magazines making these barrels a must have for any 9mm auto-loader build. Every Quarter Circle 10 9mm Barrel is tested individually for internal and external durability, headspace, and concentricity to ensure the best possible reliability and performance. Every Quarter Circle 10 9mm Luger Barrel is engineered specifically for pistol caliber ammo, not modified from an existing platform, increasing functionality, reliability, and overall performance. Every quarter-end of the Quarter Circle 10 9mm Luger Barrels is 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 the listed overall length.image

Features of Quarter Circle 10 9x19mm 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.

Package Contents:

  • Quarter Circle 10 9x19mm Barrels

Ammunition

1–52 / 52
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Ammo Boxes

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Related Products to Quarter Circle 10 9x19mm Barrels

Quarter Circle 10 9x19mm Barrels Unavailable & Discontinued Models

List of Unorderable Models

Quarter Circle 10 9mm Barrel, 5.5in, Black Nitride, QC-BRL-9-5.5 , MPN: QC-BRL-9-5.5 , Code: 3KL-ATB-919B-QC-BRL-9-5-5
Quarter Circle 10 9mm Barrel, 7.5in, Black Nitride, QC-BRL-9-7.5 , MPN: QC-BRL-9-7.5 , Code: 3KL-ATB-919B-QC-BRL-9-7-5
Quarter Circle 10 9mm Barrel, 10.5in, Black Nitride, QC-BRL-9-10.5 , MPN: QC-BRL-9-10.5 , Code: 3KL-ATB-919B-QC-BRL-9-10-5
Quarter Circle 10 9mm Barrel, 16in, Black Nitride, QC-BRL-9-16 , MPN: QC-BRL-9-16 , Code: 3KL-ATB-919B-QC-BRL-9-16
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