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Mortar matters that matter.

HERE ARE A FEW RULES all MORTAR MEN NEED TO REMEMBER ABOUT THEIR M120/M120A1 AND M121 MORTARS ...

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* If you have an M298 cannon with serial number 11729, you need to report it ASAP to the TACOM POC at the end of this article. TACOM Safety of Use Messages 10-21 and 10-27 identified several M298s that may be unsafe and only the one marked 11729 has not been accounted for.

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* The M298 cannon breech cap and cannon tube are a matched-for-life set and shouldn't be switched between cannons. The breech cap's firing pin and the cannon's white line must align for the cannon assembly to lock into the baseplate securely. That's why they're matched for life. The serial numbers are stamped on both the breech cap and cannon tube to help you keep track.

Breech cap and cannon tube must stay together. Check serial numbers to make sure you've got the right ones

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* According to TB 9-1000-247-34, Standards for Overseas Shipment of Small Arms Equipment, the M298 tube can't exceed a bore diameter of 4.757 inches for unit deployment or overseas shipment. You can find other info and requirements on 60-, 81- and 120-mm mortars on Pages 48-49 of TB 9-1000247-34. The TB is on the ETM site: https://www.logsa.army.mil/etms/welcoml.cfm

* The 120-mm mortar systems with LINs M68405 and M68326 and their M120-mm cannons, NSN 1015-01-522-2630, now require Property Book Unit Supply Enhanced (PBUSE) reporting/Unique Item Tracking (UIT). Check with your property book officer for help.

* All mortar cannons must have current Weapons Record Data cards, DA Form 2408-4, prior to firing. Soldiers authorized to fill out the card should make sure their Unit Identification Codes (UICs) are current and show only those UICs that they support or are assigned to. For more information on mortars and UICs, see PS 700: https://www.logsa.army.mil/psmag/ archives/PS2011/700/700-19-20.pdf

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IF YOU HAVE MORTAR QUESTIONS LIKE THESE GUYS, CONTACT TACOM'S JOE SCHMIDT AT DSN 786-1216, (586) 282-1216, OR EMAIL: joe.schmidt@ us.army.mil

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Title Annotation:M120/M120AI, M121 Mortars ...
Publication:PS, the Preventive Maintenance Monthly
Article Type:Brief article
Geographic Code:1USA
Date:Oct 1, 2011
Words:355
Previous Article:BUIS is backup ... leave it alone!
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