Aluminum Bolt Carrier (Type B) For Tokyo Marui M4A1 MWS - The new style bolt carrier with upgraded material 7003 aircraft grade aluminum which increase durability. Additionally, skeletonized design further reduce weight to 87.43g for a faster shooting cycle and rate of fire. This is the ultimate bolt carrier for competition shooters looking for stability, accuracy, durability to capable for intense competition requirement.

*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts.