*Dimension is design for Airsoft Masterpiece 4.3 aluminum slides, fitting will be require for other 4.3 slides (including Tokyo Marui 4.3 plastic slides)
STEEL Parts: Please apply oil / lubricant on to the surface to prevent rusting!
*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.