SIG P320 Compact: Which RSA to Use??

Can anyone tell me why SIG markets multiple RSAs for the P320 9mm Compact/Carry? (and which one is the latest version and/or better)?

Recently they shipped me two different part #s:

KIT-320C-9-RECOIL SPRING (Corrosion resistant)

131975-R (Compact/Carry)

They look mostly identical but I'm wondering why they offer two versions for the 9mm??

TIA!

Posts: 12 | Location: Tx | Registered: February 28, 2015

DaBigBR

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Perhaps the corrosion resistant version is a military or law enforcement contract item?

You would think it would say M18 but that was my best guess.

Posts: 5254 | Location: Iowa | Registered: February 24, 2011