Building a Precision AR 15 SPR #3 Assembling the lower

The thrid of several videos documenting the complete build and load development for an 18“ AR-15 Special Purpose Rifle. This video covers the complete assembly of the lower of this 18“ AR-15 Special Purpose Rifle. Uppers Components: - Mega Ams billet lower receiver (part of an ambidextrous matched set) - Geissele SSA-E Trigger - Luth-AR MBS Stock & A2 Buffer Tube - Seekins Precision magazine release & bolt release - Noveske 60 degree safety selector - Ergo Tactical Deluxe grip - Noveske pivot & take down