get mil spec lower parts kit.. maybe a bolt and firing pin.
I have been a silent witness
to all of America's finest hours.
But my finest hour comes
when I am torn into strips and used as bandages
for my wounded comrades on the battlefield,
When I fly at half-mast to honor my soldiers,
Or when I lie in the trembling arms
of a grieving mother
at the graveside of her fallen son.
I'd say a LPK and maybe a complete BCG. Only problem, they tend to morph into a new AR!
So why not cut to the chase and buy a spare BCM.
You know what they say about spares ... one is none and two is one.
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek