You will want a small pin trigger.
The CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Trigger will fit a Rock River Arms R4 Carbine and you will need the small pin.
The CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Trigger 90503 is the small pin model.
The CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Trigger will fit a PSA 10.
Yes, the CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Trigger will fit both DPMS and Armalite pattern AR10/LR308 rifles and will include trigger pins for installation.
Yes, the CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Trigger will fit Armalite pattern AR10 rifles. Triggers between AR15, DPMS, and Armalite pattern rifles are interchangeable.
The PSA Lower Receiver will use small trigger pins with the CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Trigger.
Both CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Triggers feature small pins and have a 2.5 pound trigger pull. Small pins are the correct size to fit with your Ruger AR556.
Yes, the CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Trigger will work in a PSA PA 10 Gen 3.
The Springfield Saint Edge will use a Small Pin CMC Triggers AR-15/AR-10 Single Stage Drop-in Competition Trigger. So these models will work with the Saint Edge.