After reading about them here I called Guns and Gear to order a 9mm barrel for my .40 shield. I was told they were sold out and not taking backorders. They did say they had more barrels coming in but couldn't say when. I was really getting frustrated but then they suggested that I "like" Guns and Gear on Facebook. That way I'd recieve notice as soon as they came in. I did as suggested and had a barrel within a week (early May). My 9mm conversion works perfectly.

Hope this helps
OG03

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Shield 40&9, BG, P1345, G23/19