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Keifer R. asked 8 years ago:
2 answers
Yes, That's pretty much it. A swap between 40 and 357 only involve a barrel change. 9mm to another caliber would require the Sig X-change kit.
James G.
8 years ago
wow I would have thought it would need a different weight recoil spring (along with barrel)but after research it appears that the spring is the same
Randy I.
8 years ago