Buffer H0 for AR15 M4 Carbine , Std buffer

Buffer H0 for AR15 M4 Carbine , Std buffer 
Color of Buffer may be different.

There are several different Buffers out there.
Here is the nomenclature:

Buffer H0 for AR15 M4 rifle (Std buffer) (3,0 oz = 85 gram) 55CA977
Buffer H1 for AR15 M4 rifle (3,8 oz = 107 gram) 55CA97B
Buffer H2 for AR15 M4 rifle (4,6 oz = 130 gram) 55CA92C
Buffer H3 for AR15 M4 rifle (5,2 oz = 147 gram) 55CA9FD
Buffer 9MM version AR15 Heavy Bolt (PCC Blowback)(5,36 oz = 152 gram) 90CA9B4
Buffer 10mm AUTO CMMG M4 rifle (8,0 oz = 227 gram) 10CA976
Buffer AR10 308 Carbine Buffer (Short Version) 38CA929 
Please note that weight may vary from different suppliers.