Spring set in 20 popular sizes. 6.35×22.22mm – 10 pieces. 7.73×36.51mm – 10 pieces. 7.14×19.05mm – 10 pieces. 7.14×38.1mm -10 pieces. 5.55×38.1mm – 10 pieces. 4.76×44.45mm – 8 pieces. 9.12×34.9mm – 8 pieces.
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