- ARES Ameoba / Ares M4 Series E.F.C.S. Metal Complete Gearbox Set for One-Piece Cylinder - Mid-Rear GBE-010Special Price $87.99 Regular Price $99.99
- Prometheus Airsoft AEG Non Linear Spring MS120 (Emerald) PR-4571443181572Special Price $9.89 Regular Price $10.99
- Alpha Parts Systema PTW Cylinder Spring Guide Washers (Stainless Steel) APARTS-PTW052Special Price $6.29 Regular Price $6.99
- Dytac Stainless Steel Shims Set for Barrel Nut for Airsoft AEG / PTW / EBB DY-AC75-SSSpecial Price $7.64 Regular Price $8.99
- Prometheus EG Hard Gear 20:1 Double Torque for Tokyo Marui Next Generation Recoil Shock Gearbox PR-4571443174680Special Price $48.59 Regular Price $53.99
- Prometheus EG Hard Gear 16:1 High Speed for Standard Version 2 / Version 3 Gearbox PR-4571443174659Special Price $48.59 Regular Price $53.99
- Silverback Advanced Piston Head for Original SRS & TAC41 'AEG' Cylinder Head Out of Stock SBA-BPH-01Special Price $34.31 Regular Price $38.99
- Modify Airsoft AEG Tappet Plate for Version 3 Gearbox GB-05-13Special Price $4.00 Regular Price $7.99
- Modify Rotary Spring Guide w/ Bearing for Ver.2 (Marui, G&P & CA Ver.2 Series) GB-06-11Special Price $9.79 Regular Price $13.99
- Modify Gearbox Bushing for Jing Gong (JG) Version 2 / Version 3 Gearbox (6 pcs) GB-03-21Special Price $6.29 Regular Price $8.99
- Blackcat Airsoft Elongated Stainless Steel Air Seal Nozzle for Systema PTW BCA-P-081Special Price $7.64 Regular Price $8.99
- SHS Aluminum Cylinder Head for Tokyo Marui M4 Next Generation SHS-GT0081Special Price $7.64 Regular Price $8.99