WB
I bought a Gen 4 model 21 .45
Wednesday, February 19, 2020, 09:23

Dropped a Gen. 3 model 20 10mm barrel and 10mm mag and now it’s a model 20! Probably the most versatile gun they make! The Gen 3 recoil rods require a little bushing that drops in the end of the slide. Gen 4 uses a captive multi spring system. .45 and 10mm both use the same weight spring.


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