Fits in a mil spec AR15/M4/M16 lower receiver. For use with MCR upper receiver assemblies, provides the necessary clearance for the wider MCR upper receiver. Mfg: Fightlite Industries
Fits in a mil spec AR15/M4/M16 lower receiver. For use with MCR upper receiver assemblies, provides the necessary clearance for the wider MCR upper receiver. Mfg: Fightlite Industries
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