| http://www.w3.org/ns/prov#value | - rier assembly quickly and easily changes from 223/5.56mm NATO to 6.8mm Rem SPC (spec II chamber) Free-floating MIL-STD 1913 monolithic top rail for optic mounting Fully ambidextrous controls including magazine release, bolt catch and release, fire selector and non reciprocating charging handle High-impact composite hand guard with heat shield ??? accepts rail inserts High-impact composite lower re
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