Question: are springfield xd barrels interchangeable?
Answer: All XD barrels are drop in and will only occasionally require a gunsmith to fit. ... 40S&W-to-9mm conversion barrels require the use of a 9mm magazine. 40S&W and 357Sig barrels are interchangeable. XD. (m) barrels and conversions are currently only available for the 40S&W and 9mm 4.5 and 3.8 models.