Yeah, looks like everything is in the DPMS Catalog, But I can't find it online.
A search for "DPMS CHROME" at
www.midwayusa.com will show all the parts
From the DPMS Catlog:
LR-C13 BOLT CATCH $11
LR-C1 DISCONNECTOR $8
LR-C5 HAMMER $25
LR-C6 MAG CATCH $10
LR-C7 MAG CATCH BUTTON $6
LR-C8 PIVOT PIN $10
LR-C9 REAR TAKEDOWN PIN $10
LR-C10 SELECTOR $15
LR-C11 TRIGGER $20
LR-C12 TRIGGER/HAMMER PINS $3