Return to 7.5" 300 BLACKOUT 1x7 4150 CrMoV MELONITE NITRIDE AR-15 BARREL

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Tuesday, July 21, 2026 : Ross Perry from Indianapolis, IN United States   Best barrels for the money! Was this review helpful to you?

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Solid Wednesday, December 11, 2024 : tim stoneking from Littleton, NC United States   Great barrel at a great price. Exactly what I was looking to get for my 300blk build. I’ve had other MAS barrels and the quality is on par with others at higher price points. You won’t be disappointed. Was this review helpful to you?

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7.5" 300 BLACKOUT 1x7 4150 CrMoV MELONITE NITRIDE Sunday, June 9, 2024 : from Mesa, AZ United States   7.5" 300 BLACKOUT 1x7 4150 CrMoV MELONITE NITRIDE AR-15 BARREL Great service with MAS Defence. Email updates, a real person on the phone if you have questions, accurate tracking, and the barrel looks perfect. I'm happy to see MAS continue to update and add to their product line. Was this review helpful to you?

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Barrel Thursday, May 5, 2022 : Dom   Great products every time! Was this review helpful to you?

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Dropped right in and light Saturday, March 5, 2022 : from Hoolehua, HI United States   Was this review helpful to you?

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Blackout Pistol Barrel a must Thursday, January 20, 2022 : DENNIS L from Cumming, GA United States   Ordered a 7.5" Blackout barrel for a pistol build.  Not only did it arrive fast, but fit exactly as I wanted, and performs as expected.  Great finish.  Seamless fit with my gas block.  If you're planning a build, MAS Defense parts won't let you down. Was this review helpful to you?

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.300 Barrel Wednesday, February 20, 2019 : Lucien Morin from Indian Trail, NC United States   Great Barrels! Was this review helpful to you?

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Havent used it yet... Saturday, December 8, 2018 : Randy Burke from Elk, WA United States   Haven't built the 300BLK yet, but MAS had a helluva good deal and fast shipping like usual! Previous barrels all performed well without a hitch! Was this review helpful to you?

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Excellent barrel for the price! Monday, July 23, 2018 : John B.   Fantastic quality and excellent workmanship. This is an excellent barrel for the price. Made my pistol build so much nicer! Was this review helpful to you?