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Seller's Comments and Description:
416-R Stainless Steel with QPQ Nitride finish 5.56 Caliber mid-length gas system, .078″ diameter gas port .625″ gas block diameter, 1.1″ gas block journal length 1 in 8 twist 1/2-28 threads on muzzle M4 barrel extension 11 deg target crown Magnetic Particle Inspected Weight – 1 lb 3.1 oz
