5.56mm NATO 20" replacement barrel, 1:12 twist, 41V50 Mil spec vanadium alloy
steel, fully machined and assembled with A1 extension, chromed bore and chamber for
optimum performance and durability, .625" gas block A1 height, designed for rifle length
gas system, drilled gas port, parkerized finish, muzzle thread 1/2 x 28.
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Great product! Good quality finished up my retro build and shoots fantastic.
Just what I was looking for to finish a customer build who wanted a retro M16A1.
Inspecting this barrel, I found I love it. Correct (non f-marked) FSB, no m4 feedramps, 0.625 under FSB, the finish is dark grey and very even, and the bore looks like a mirror with the chrome lining. I am very happy with this barrel and would buy again from TNTE.