Developed by nguyenkvvn, this printable magazine is the first printable magazine for CMMG .22 platforms to achieve widespread success. It is primarily printable, requiring only a spring and some nuts and bolts to assemble it.
This magazine uses a clamshell design in which two halves are printed and then bolted together. There are two sizes to this design: a six round design and a twelve round design. Both sizes also come in windowed and non-windowed variants.
As noted in the README, the printable replacement parts (baseplate lock, baseplate and follower) are compatible with CMMG OEM, meaning they can be swapped in to actual CMMG .22 magazines if desired.