Heres some of my experience on the 5.45 stuff , buy the barrel and bolt from the same manufacturer, they dont all head space the same , a spikes bolt and another brand barrel did not head space together . Be careful if buy from 2 different vendors
Lord, Make me fast and Accurate. Let my aim be true and my hand faster than those who would seek to destroy me.
Grant me the victory over my foes and those that wish to harm me and mine. Let not my last thought be If only I had my gun ; and Lord if today is truly the day that You call me home , Let me die in a pile of brass.