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Cake day: October 14th, 2025

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  • The decker is a fully diy in .380acp and the 3dp90 is a a diy 5.7, so it for sure would work, the only thing in the 3dp90 that’s usually not diy is the barrel, but they do include the blueprints in case you got a barrel blank and a lathe. I dunno about .45 since its such a bigger round, the bolt would have to be heavier and the upper stronger, but you can for sure do it