Manufacturing Industry
New M4/M4A1 extractor spring
PS: The Preventive Maintenance Monthly, Dec, 2004
To improve the reliability of the M4/M4A1 carbine, the Army has gone to a new extractor spring assembly for the carbine's breech bolt assembly, whose NSN is now 1005-01-505-1035 because of the new extractor spring.
The new extractor spring assembly comes with NSN 1005-01-505-2886. It's gold colored with a black insert and will be added to TM 9-1005-319-23&P in Change 8.
All M4/M4A1s should have the new extractor spring assemblies installed by June 2005.
The M16-series rifle will continue to use the extractor spring assembly that comes with NSN 1005-01-424-5899 and is dark and has a black insert.
FOR MORE INFO, SEE TACOM MAINTENANCE ADVISORY MESSAGE MAM-04-024
QUESTIONS? CONTACT TACOM'S KEVIN MOORE AT DSN 793-2359/(309) 780-2359 OR EMAIL: moorek@ria.army.mil
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