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You-yes, you-watch UOC.

Dear Editor,

In my work in Southwest Asia, I've run across armorers ordering the wrong parts for their M16s or M4s. I don't think they're paying attention to the UOCs. Can you remind them?

Bill Schwarz

LOGSA contractor

Redstone Arsenal, AL

Editor's note: Of course. UOC stands for "usable on code" and is listed in the parts TM in the description column for each item. It's important to pay attention to the UOC because otherwise you could end up with an M16A4 barrel assembly for an M16A2.

Remember, for M16/M16A 1 parts look in TM 9-1005-249-23&P and for the M16A2/A3/A4 and M4/M4A1 versions look in TM 9-1005-319-23&P.

HERE ARE ALL THE UOCS FOR THE M16S AND M4/M4A1S...

M16A1 AR6

M16A2 AR8

M16A3 AW4

M16A4 AZ1

M4 AS1

M4A1 AY6

Handguard assembly

(M16A2)

UOC: AR8

Handguard, assembly

(M4, M4AI)

UOC: ASI, AY6

Tube, bent, metallic

(M16A2, M16A3, M16A4)

UOC: AR8, AW4, AZI

Tube, bent, metallic

(M4, M4A1)

UOC: AS1, AY6

Barrel, assembly

(M16A2, MI6A3)

UOC: AR8, AW4

Barrel, assembly

(M16A4)

UOC: AZ1

Check UOC befor ordering parts
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Article Details
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Title Annotation:M16-Series Rifle, M4/M4A1 Carbine ...
Publication:PS, the Preventive Maintenance Monthly
Article Type:Brief Article
Geographic Code:1USA
Date:Apr 1, 2005
Words:183
Previous Article:How worn is too worn?
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