Please read the description and prices below! The Halo Magnum conversion kit is made specifically for the blowback KWA MK23. You heard me, a blowback airsoft Halo Magnum. It features a picatinny rail for accessories, glow in the dark sights, a functional viewfinder, as well as an ODST suppressor which can be foam filled (but is there even a point for the KWA MK23. The viewfinder and suppressor are modular and can be interchanged and secured with the included hardware. Prices: With Viewfinder $60 With ODST Suppressor $75 With Both Viewfinder and Suppressor $85 Prices are shipped! Due to the nature of 3D printing, there may be visible imperfections so light hand sanding and painting is highly recommended. MK23 base gun is not included in the kit. These kits are made to order so a 2-3 week lead time is to be expected! A video assembly guide will be sent to you the moment the order rolls out! Thank you for your patronage.