rebuilding my ar-15

accuracybyvolume

Private
Minuteman
May 19, 2010
1
0
37
texas
so im rebuilding my ar-15. had a slight mishap with the stock breaking off at the thread hole. i have all orginal parts for it just need the lower reciever and firing pin retaining pin. any suggestions on where to find instructions for swaping lower reciever parts out?