Buffer for CMMG M4 RDB 10mm AUTO

There are several different Buffers out there. Here is the nomenclature: Buffer STD for AR15 M4 rifle (3,0 oz = 85 gram) Buffer H1 for AR15 M4 rifle (3,8 oz = 107 gram) Buffer H2 for AR15 M4 rifle (4,6 oz = 130 gram) Buffer H3 for AR15 M4 rifle (5,2 oz = 147 gram) Buffer 9MM version AR15 Heavy Bolt (5,36 oz = 152 gram) Buffer 10mm AUTO CMMG M4 rifle (8,0 oz = 227 gram) Please note that weight may vary from different suppliers.