As others have stated, the trigger, sear, hammer, 2 springs & 2 pins ARE the same.
FYI, the front (pivot) and rear (takedown) pins are NOT the same. The buffer tube IS the same, but the buffer spring & buffer weight are NOT the same (AR-15 vs AR-10)
Lastly, the bolt catch is slightly different, between AR-15s and AR-10s, AND slightly different between Armalite type AR-10 lowers, and other (DPMS style) AR-10 lowers.
Basically, AR-15s = standardized. AR-10s = not standardized