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 6610-01-293-6579
NSN 6110-01-284-0318
NSN 4140-00-004-4544
NSN 5935-01-233-3999
NSN 5975-01-081-6836
NSN 5935-01-123-0688
NSN 6610-01-603-0703
NSN 5930-00-491-9133
NSN 5925-00-736-0425
NSN 6130-01-459-9025
NSN 6110-01-354-6175
NSN 6610-00-225-9886