NINE BALL GUNGNIR カスタムスライド - マルイMK23用 NBBエアソフト

Cool design, very light and not bad quality although it feels rather delicate. Some small things that would have been helpful like painted or fibre dots on the iron sights as they are hard to see and note they only usable with tomb stone style suppressors or no suppressor.
The red dot attachment holes I found hard to find one that fits without spending alot on the 3 recommend sights, at least 5x the price of a standard airsoft red dot. I could not find an adapter for other sights either. Giving up I ended up grinding the dove tail off of a universal glock adapter and drill out the threads and countersinking the holes allowing most pistol sights to be used without modification to the slide. this worked perfectly. I recommend it but be prepared to spend more time or money than you thought just to be able to aim well with a suppressor on ya 23.