Detonator CNC Performance Center Ported 5" for Marui M&P9L GBB (Matt Black)
CNC Metal Construction
Based on the specification stamped on the real gun
Engrave Original laser markings on Slide
Supplied with 125mm outer barrel (Silver, Engraved "9mm" Marking)
Include Extractor, Extractor Spring, Screw, Side Release Notch Part, RMR Dot Sight Plate
Suitable for Tokyo Marui M&P9L Series Airsoft Gas Blow Back GBB Pistol

Effortless installation, the quality of the slide is so great, it's more or less plug and play. However, you will have to carefully install the indicator.