AR57 Stripped AR-15 Lower Receiver Gen II – Multi Caliber – Black
AR Five Seven AR57AR15: This incredible lower receiver from AR Five-Seven is precisely what you need to start (or finish) that new AR-15 rifle or pistol build! This lower receiver is manufactured from 7075-T6 aluminum forgings and is built to military specifications. This particular model is designated as “Multi-Cal” and can be completed to suit your caliber choice. This model is also designed to work with most AR-15 pattern mags and drums.
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