Tokyo Marui – MP7A1 Hop Unit (Chamber) (Left and Right Side) For MP7A1 Gas BlowBack Sub Machine Gun Series – Original Part Number – MGG1-41,42 (R7424/R7425)
Tokyo Marui – MP7A1 Hop Unit (Chamber Screw) For MP7A1 Gas BlowBack Pistol Series – Original Part Number – MGG1-43 (R7426)
Tokyo Marui – MP7A1 Hop Unit (Hop Arm) For MP7A1 Gas BlowBack Sub Machine Gun Series – Original Part Number – MGG1-44 (R7427)
Tokyo Marui – MP7A1 Hop Unit (Hop Nub) For MP7A1 Gas BlowBack Sub Machine Gun Series – Original Part Number – MGG1-45 (R7428)
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