This is an AR-10 .308 Magpul/PMAG speedloader that loads 30rds at a time.
I have been working on new concepts of this design, if it gains popularity I will release versions for other Calibers as well.
STL (Stereolithography, filesize: 1.71 MB), OBJ (OBJ, filesize: 2.03 MB), FBX (Autodesk FBX, filesize: 869 KB)