Here are the lower parts sans trigger group and grip as from Brownells, DPMS parts.
Part number
Part
---
231-000-068
LR-26 SELECTOR SPRING
231-000-088
LR-08 SAFETY SELECTOR, AR-15
231-000-089
LR-09 BOLT CATCH SPRING
231-000-090
LR-10 BOLT CATCH BUFFER
231-000-091
LR-11 BOLT CATCH
231-000-092
LR-12 BOLT CATCH ROLL PIN MS16562-11
231-000-093
LR-13 MAGAZINE CATCH
231-000-094
LR-14 DETENT SPRING (2 needed)
231-000-095
LR-15 TAKEDOWN DETENT (2 needed)
231-000-096
LR-16 MAGAZINE CATCH SPRING
231-000-097
LR-17 MAGAZINE CATCH BUTTON, ALUMINUM
231-000-098
LR-18 FRONT PIVOT PIN
231-000-102
LR-27 DETENT (SELECTOR)
231-000-104
LR-30 REAR TAKEDOWN PIN
231-000-107
LR-01 BUFFER RETAINER
231-000-108
LR-02 BUFFER RETAINER SPRING
231-000-109
LR-04 TRIGGER GUARD PIN MS16562-129
231-000-132
LR-03 TRIGGER GUARD ASSY W/ PIN
231-000-134
LR-23 PISTOL GRIP SCREW
231-000-135
LR-24 PISTOL GRIP LOCK WASHER
I have used these parts in 7 builds along with the Rock River WOA tuned NM two stage trigger and Hogue grip without any problems what so ever.