I have a CMMG lower parts kit (SKU 55VA601) without the fire control group, trigger guard and grip but I have all those parts if needed! $35 for the parts kit (a couple of the pins where used but removed from my build...they have never been used in a functional rifle) $55 if you want the FCG, trigger guard and grip.
I also have a standard forward assist for your AR15 for $15 with the bulls eye pattern.
I also have a standard forward assist for your AR15 for $15 with the bulls eye pattern.