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New M4/M4A1 extractor spring.

To improve the reliability of the M4/M4A1 carbine carbine

Light, short-barreled rifle. The first carbines, from the muzzle-loading muskets of the 18th century to the lever-action repeaters of the 19th, were chiefly cavalry weapons or saddle firearms for mounted frontiersmen.
, the Army has gone to a new extractor spring assembly for the carbine's breech breech (brech) the buttocks.

breech
n.
The lower rear portion of the human trunk; the buttocks.



breech, britch

the buttocks of an animal; the backs of the thighs.
 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 TACOM Tank-Automotive and Armaments Command (US Army)
TACOM Tactical Communications
TACOM Tactical Command
TACOM Tank-Automotive and Armament Command
TACOM Theater Army Command
TACOM Tactical Army Command
TACOM Tactical Army COM
 MAINTENANCE ADVISORY MESSAGE MAM-04-024

QUESTIONS? CONTACT TACOM'S KEVIN MOORE AT DSN 793-2359/(309) 780-2359 OR EMAIL See e-mail. : moorek@ria.army.mil
COPYRIGHT 2004 PS Magazine
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2004, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Title Annotation:M4/M4A1 Carbine ...; rifle's breech bolt assembly
Publication:PS, the Preventive Maintenance Monthly
Article Type:Brief Article
Geographic Code:1USA
Date:Dec 1, 2004
Words:126
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