870 SuperMag v 870Police?

[jmstr]

I have read the Remington PDF that lists the differences between the 870Police and the 870 Express.

What I am curious about is if the same points are the differences between the 870 Police and the 870 SuperMag?

I have been told that some part [bolt, bolt carrier, something like this?] is the same between the two, but different between the Police and 'normal' 870 Express.

What about the Extractors? Ejectors? Recoil Spring? Carrier Spring?


Also, what is the difference between an 870 SuperMag's trigger group and the 'normal' 870 Express' trigger group?

I would like a metal trigger group instead of plastic, on general principles, but don't want to spend the money to fine out I can't pop a Police trigger group in.

[Virginian]

Trigger plate assembly is different on SuperMag and "regular" 12 gauge Expresses per the parts list. Slide assembly is the same for SuperMag and Police. Bolts are different. You can go through the parts list and see.