Primary Weapons Systems MK114 MOD 2-M Complete AR-15 Upper Receiver - 6mm ARC - 14.5"
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Primary Weapons Systems MK114 MOD 2-M Complete AR-15 Upper Receiver - .223 Wylde - 14.5"
Primary Weapons Systems MK114 MOD 1-M Complete AR-15 Upper Receiver - 6mm ARC - 14.5"
Primary Weapons Systems MK114 MOD 1-M Complete AR-15 Upper Receiver - .223 Wylde - 14.5"
