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I have a stock 17L, works just fine. What kind of ammo are you shooting btw? I ran ultra heavy and ultra light ammo and the ultra light didn’t cycle properly. I’ve got a stock 17L spring (which is just a 17 spring, Glock designed the 17L with a longer slide that matched the 17 weight so they wouldn’t have to mess with the spring)
Just buy it from Glock, or try to find a deal but now you know what to get.
