If you add an optic you're adding weight which in turn means you might upset the balance of slide weight / spring / charge.
You might want to add the optic before dealing with the springs, so that when you choose a spring it's based on the final slide weight and not one that will change.
You might want to add the optic before dealing with the springs, so that when you choose a spring it's based on the final slide weight and not one that will change.
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