Swifts springs for gen1 are here

:
MS3
http://www.swiftsprings.com/file/ss.pdf

finally they had the gen2 springs tested and found it works well for the gen1 and advertise it as such now... Great springs.. Google Swift Springs and you will see how highly accepted they on other platforms. If you have any questions, I can help answer them. The only way I am associated with Swift is getting them out for the gen2 and now the gen1...just a consumer like you and wanting only the best.
 
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