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[5KU] [GB-157] M4/M16 SI 換檔銷 [用於 M4 GBB/PTW/DTW][SV]
描述：
- 料號：GB-157-SV
- 換檔銷由鋼材經 CNC 加工而成，
- 這是標準 /M16/M4 拆卸銷的替代品
- 兼容 WA/WE-Tech M4 Gas blowback GBB、SYSTEMA M4 PTW 和 G&D DTW
規格：
- 顏色：銀色
- 材質：鋼
- 兼容性：WA/WE-Tech M4 Gas blowback GBB、SYSTEMA M4 PTW 和 G&D DTW
- 重量：20克
包裝內容：
- 換檔銷 x 1set
