About VCSEL ISEG MKII NGAL. This version is the bee’s knees when it comes to ISEG NGALs, I’m lucky enough to be able to get these so you guys can now enjoy the best of the best lasers. The full Power MKII ISEG NGAL with green VIS laser and VCSEL illuminator, forged 6061 aluminum housing and full PCB potting. MKII boasts better laser coalignment QC, diffuser caps unlike older ISEG NGALs that only have clear mock caps. Forged 6061 aluminum housing. PCB epoxy sealed. Clicking windage/elevation adjust. Visible override function with LA23 plug version. Adjustable IR illuminator. Ceramic paint surface finish. Guaranteed hold zero for up to 5.56 NATO. Comes with a functional IR illuminator diffuser cap. Manufactured by IS-EG®. Co-alignment precision:? 4MOA. IR wavelength: 850nm. IR laser power at High: 40mW. IR laser power at Low: 0.6mW. Beam divergence: 0.5mrad. Visible wavelength: 650nm / 520nm. Visible laser power at High: 40mW / 20mW. Visible laser power at Low: 4.5mW. Beam divergence: 1mrad. IR illuminator type: EEL IR laser 830nm. IR illuminator power at High: 80mW. IR illuminator power at Low: 5mW. Adjustable divergence: 15-100mrad. Color: Black or Dark Earth. Mount: picatinny mount. Battery: 3V CR123A (NOT INCLUDED). Size: 90mm x 50mm x 35mm.