Showing the unattached DIY Redi-Mod ReDIY-Mod.

The cutouts are seen and the mag release is also visible. For the Mag release, I drilled and tapped it for a 4-40 oval head stainless screw that I threadlocked in. The screw is to serve as an extension so that when the main mag release is pressed, pressing it further will also release the Redi-Mod stored mag. The cutout serves to lighten the part as well as expose most of the lettering for any SBR markings on a receiver.