4150 CMV steel
1-in-10″ twist rate
QPQ Nitride treated
.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.
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I purchased a 5.5 inch 9mm barrel for my SBR build and I was highly impressed with the quality of the barrel before and after shooting the build. I can easily hit steel at 100 meters with this barrel and a red dot. This is a great quality barrel that is designed specifically for your Q10 build. The threading is 1/2 x 28 be aware of your build and 556 flash hiders. Thanks Q10 for the great barrel and the fast shipping!