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for Hi-Capa & Glock Hpa Adapters from Primary airsoft
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Provide 120% / 140% power on different tension zone Shorten length with harder coil Improve cycling efficiency
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Use for Tokyo Marui Hi-CAPA 4.3 / 5.1 / Gold Match
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Use for Tokyo Marui Hi-CAPA 4.3 / 5.1 / Gold Match / 1911