Pof-usa barrel ar-15 5.56 nato 16.5″ 1:8 mid-length e2 tech
FEATURES:
-16.5″ barrel
-5.56 match chamber
-1:8 twist
-Nitride heat treated
-Mid-length configuration
-M4 feed ramps
-E² extraction technology
-5R rifling
Other Features: 4150 chrome vanadium steel, 5r rifling 1:8 twist, mid-length gas port, e2 extraction technology, nitride heat treated finish m4 feed ramps, fits all mil-spec uppers,.750 gas block diameter
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