Combat Armory Billet AR-15 Lower Receiver
www.combatarmory.com
Or upper and lower combos for $80
Combat Armory AR15 Billet Upper & Lower Receiver Combo
www.combatarmory.com
Or lowers with LPK and buffer tube/stock assembly $105
Combat Armory AR15 Billet Upper & Lower Receiver Combo
www.combatarmory.com
Never ran their stuff so I can't make any testimony