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Harrison Design & Consulting: 1911 AUTO HD-120 EXTREME SERVICE IGNITION COMPONENTS HD-121 – Harrison Design HD-121 1911 Extreme Service Ignition Kit HD-120 Hammer Sear Disconnector Precision Matched Set Hardened Steel Custom Competition Reliable Trigger Pull Drop In Upgrade Made USA featuring harrison ignition kit. Supreme harrison hd-121 – Harrison premium 1911 hd-120 extreme service ignition components hd-121 supreme reliable legendary fire control.
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