I just finished building a new lower with the following:
1) Rise Armament lower
2) ALG Defense lower parts
3) Magpul MOE butt stock and pistol grip
4) V Seven Buffer tube
5) Geissele braided buffer spring and buffer combo
6) Larue MBT Trigger
Will I be able to run an 18" upper assembly with this set-up?
Thanks much,
Spudwebb