Return to 10.5" 300 BLACKOUT 1X7 4150 CRMOV MELONITE NITRIDE BARREL

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300 ACC Blackout 10.5 Barrel May 1, 2016 : Jack B   Installed fine, no issues. Shoots straight, Happy with the product. Would recommend to others. Was this review helpful to you?

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10.5 April 30, 2016 : Chet B   I haven't assembled it yet but is a quality product and well made. Was this review helpful to you?

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Fast March 29, 2016 : Daniel G   Received fast. Would recommend to anyone. Was this review helpful to you?

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would to recommend others March 24, 2016 : Daniel G   Fast shipping!! gas block and gas tube came assembled. Great barrel! Very well packaged! I would recommend Mas Defense to anyone!! Overall great job!! Was this review helpful to you?

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Good looking barrel February 27, 2016 : Ivan E   Received it in awesome condition. Barrel its self looks like quality stuff. The only personal preference I would've liked to see is dimpled holes for the gas block screws. Can't wait to putrounds through it and see what bullet sizes it likes. Was this review helpful to you?

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Very Accurate Barrel February 16, 2016 : Michael D   Bought this 300 blk barrel 01/2015. After break in I tried some 17.5/H110 with 110 gr Horn. amax; 3shots in 1" at 100yds. 220 OTM with 9.3 gr/H110; 3 shots 1.5" at 100 yds. Feeds and functions sub and super no problem. It also came with the gas block and tube installed. I probably won't be buying any more $300 barrels. Was this review helpful to you?

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Awesome product February 7, 2016 : Nathan W   Just like others I've bought here, this barrel arrived quickly and is an excellent value for such a low price Was this review helpful to you?

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Another Great Value December 26, 2015 : Scott F   ...From MAS. Super fast shipping as well, easy tracking to my doorstep. Was this review helpful to you?

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Great Barrel at a Great Price December 26, 2015 : Scott F   great machining and finish, installs like it should. first shots out of my Christmas present to myself were right on the money. Anxious to mount the suppressor! Scott Fahey WI Was this review helpful to you?

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Mas Defense Parts and Service December 21, 2015 : Larry W   I have built 2 300 blkout ar pistols , 1 9mm ar pistol and am to receive the parts to build a 5.56 ar pistol tod. All parts from Mas Defense. Have not had any problems....all parts fitted perfectly. Sure am glad my friend Dave told me about Mas Defense. This is now my go to place for all of my builds and I really like the quick service. Big thanks for the personal type service, not only for me but to all of your customers. Larry W Del City, Ok Was this review helpful to you?