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Continue to ChatPDI W-hold Hopup Bucking GBB/VSR-10 (50° / 70°) https://blackblitzairsoft.com/products/pdi-gbb-w-hold-hop-up-bucking
PDI W-hold Hopup Bucking GBB/VSR-10 (50° / 70°) https://blackblitzairsoft.com/products/pdi-gbb-w-hold-hop-up-bucking