M4 type barrel only; assembly less handguards, gas tube, delta ring kit andflash suppressor
No other part numbers with same form, fit, and function found.
Classification: Parts and accessories for military rifles of heading 9301
NSN 6320-00-343-1798
NSN 5920-01-579-1285
NSN 5985-01-073-9101
NSN 5996-01-334-3038
NSN 6130-01-486-7918
NSN 6110-01-545-6079
NSN 6145-01-371-3272
NSN 5975-01-565-1324
NSN 6220-01-642-6424
NSN 6220-01-249-3884
NSN 5996-01-414-7676
NSN 6650-01-399-8552