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- Silverback MDRX Nozzle Assembly (modify version) SBA-NZE-02Special Price $14.99 Regular Price $17.99
- Silverback MDRX AEG Power Spring (100 Newtons) SBA-SPR-1100Special Price $9.99 Regular Price $11.99
- Silverback MDRX AEG Power Spring (120 Newtons) SBA-SPR-1120Special Price $9.99 Regular Price $11.99
- Silverback MDRX Replacement Screw Set (Gearbox only) SBA-SST-51Special Price $2.99 Regular Price $3.99
- Silverback Steel Variable Mass Piston Body for SRS & TAC41 SBA-BPS-33Special Price $20.99 Regular Price $24.99
- Silverback TAC41 Airsoft Hop Up Unit for 'GBB Type' SBA-HOP-31Special Price $28.99 Regular Price $34.99
- Silverback (100 Newton) APS 13mm Type Spring for SRS & TAC41 Airsoft SBA-SPR-3100Special Price $12.74 Regular Price $14.99
- Silverback (120 Newton) APS 13mm Type Spring for SRS & TAC41 Airsoft SBA-SPR-3120Special Price $10.99 Regular Price $12.99
- Silverback Advanced Piston Head for Original SRS & TAC41 'AEG' Cylinder Head SBA-BPH-01Special Price $33.14 Regular Price $38.99
- Silverback TAC 41 Airsoft Advanced Piston Head for TAC41 'GBB' Type Cylinder Head SBA-BPH-02Special Price $37.99 Regular Price $44.99