M2A1 Barrel Questions Got You Over a Barrel?

The bracket for Item 11 in WP 0038 00-2 of the M2A1 machine gun’s TM 9-1005-347-23&P shows the barrel assembly, NSN 1005-01-541-2478, to include the barrel, flash suppressor, barrel cap and carrying handle. But when you order that NSN, you receive only the barrel with the flash suppressor installed.
The bracket for Item 11 in WP 0038 00-2 does confuse things and will be removed in the next revision to the TM.
When you order NSN 1005-01-541-2478, you’ll receive only the barrel and the installed flash suppressor.
The barrel carrying handle (Item 12), NSN 1005-01-539-3410, is BII and should not be turned in with a damaged barrel.
The barrel cap (Item 14A), NSN 5340-01-545-2949, is BII for the BFA, which is covered by TM 9-1005-314-13&P. It also should be kept and not turned in with a damaged barrel.
The barrel cap can be used in place of the flash suppressor during live fire training. When the BFA is going to be used, the barrel cap should be installed like it says in the BFA TM. Remember there is also a barrel protective cap, NSN 5340-01-552-0082, which protects the barrel breech threads. Don’t mix up the caps.


Locking Block Can Ruin Your Piece of the PIED

The KGV-72 programmable in-line encryption device (PIED), NSN 5810-01-564-3364 (LIN E05008), is designed to encrypt Blue Force Tracking (BFT) message traffic.  But when it’s time to turn in the PIED, here’s a message that really needs to get through:

Don’t damage the locking block!

Too many units are losing or misplacing the padlock key.  So when it’s time to turn in the PIED, they use tools to remove the lock.  Unfortunately, that almost always breaks the locking block.

A broken block can’t be repaired.  Even worse, you can be held financially liable for replacing the $2,565.58 PIED per AR 735-5, Property Accountability Procedures and Financial Liability Officer’s Guide.  A DD Form 200, Financial Liability Investigation of Property Loss (FLIPL), along with a property book officer document number must be submitted at the time of the request to the item manager before an operational PIED can be issued.

So don’t lose the key to your lock.  And if you do, check with the item manager for instructions on what to do next.


AN/PSQ-20/20A Goggles Blind? Good News!

If your AN/PSQ-20, NSN 5855-01-534-6449, or AN/PSQ-20A, NSN 5855-01-603-0489, night vision goggles aren’t working, there’s good news. You can get them fixed if they qualify.

The fix doesn’t cover ancillary items or components of end item for the goggles and is available only if the goggles fail after a thorough inspection following TM 11-5855-322-10 or TM 11-5855-335-10 or their -23&Ps. Your 94F repairman does that.

To get your goggles fixed, you’ll need a return authorization from the manufacturer. Get it by logging into the warranty repair portal:


New users will need to register by clicking on the HERE button on the left side of the web page. Returning users can log on with their email address, password and DODAAC.

Once you receive a return authorization, fill out a DD Form 1348-1A and ship the goggles to:


Warranty/Customer Repair Service

7635 Plantation Road

Attention: Marketing Department RA#____

Roanoke, VA 24019

If you have questions, call Harris at (800) 533-5502 or (540) 563-0371.

3 Tips for Getting PS Back Issues

We get lots of requests for PS back issues. That’s great! But we also get returns from the post office after filling back issue requests. That’s not so great and it’s costly, too.

Here are some tips to help make sure those back issues reach you:

Give us a good mailing address. Most returns are due to incomplete or inaccurate mailing addresses. Including a street with the address is critical. If you have any problems with mail reaching you at your military address, use your home address instead. No worries—our mailing list is never sold or shared.

We’ve gotten “refused” returns, too. Make sure that you tell whoever usually gets the mail at your unit that you’re expecting a package from PS. In your original request, specify the months or years and how many copies of each PS issue you want. Send your back issue request to:

usarmy.redstone.logsa.mbx. psmag@mail.mil

You can also request back issues by clicking on the REQUEST BACK ISSUE button at our website:   Just scroll down to the bottom of the tan-colored column.     To set up a monthly subscription to PS, follow the instructions at:

https://www.logsa.army.mil/psmag/ps-subscription.cfmYou can always download PS in digital form from our website, too.https://www.logsa.army.mil/psmag/pshome.cfm

PS Mobile App

You can also load recent issues of the magazine to your mobile device by using the PS Magazine mobile app. Read about it at:


PS supports the concept that you meet inspection requirements of having three years of PS Magazine on hand if you have them in either print or on your mobile device. Access means accessibility, not print vs mobile format.

M88A1…Keep Final Drive Sprockets On Track

Mechanics, the final drive hub sprocket’s threaded bolt holes on your M88A1 can strip or even break if you don’t do PM. That could leave your vehicle with a wobbly final drive sprocket.

Here’s how to keep those bolt holes in good shape and your final drive sprocket on track:

  • During semi-annual PMCS, inspect the final drive hub bolts. Re-torque loose bolts, NSN 5306-00-799-7722, to 225-250 lb-ft. Locking nuts, NSN 5310-00-225-6408 should be torqued to 70-90 lb-ft.
  • Only use those locking nuts once. If they’re loose or have to be removed, replace ‘em.
  • Always use a dab of GAA on the final drive hub sprocket bolts and locking nuts during installation.

New Guidance for Shipping Lithium Batteries By Air

Effective April 1st, 2016, the International Civil Aviation Organization made changes to the technical instructions for the safe transport of dangerous goods by air. The changes were adopted by the International Air Transport Association, impacting all DOD shippers. This update affects the air shipment of lithium ion cells or batteries UN 3480. Get revised guidance and shipping instructions at:


Questions? Contact your HAZMAT POC or the Surface Deployment and Distribution Command’s Safety Office at (618) 220-5040/5041 or email:


Demil Lasers and Sensors

Because the following sensors and lasers will no longer be sold to the public due to a Class II laser exemption, their demil codes are being changed from F to D.

That means you can demil them without having to contact TACOM. Break the glass on all of them, including each of the lasers, and remove their batteries before turning them in to DLA Disposition Services.

Item NSN
AN/PAQ-4 5855-01-107-5925
M30 boresight 5860-01-394-7781
AN/PEM LBS 5860-01-471-2091
LA-8/P-ALP (left hand) 5860-01-564-8167
LA-8/P-ALP (right hand) 5860-01-558-4706
AN/PEQ-14 ILWP (black) 5855-01-538-0191
AN/PEQ-14 ILWP (tan) 5855-01-571-1258
AN/PEQ-16A MIPIM 5855-01-550-2780
AN/PEQ-16B LED version 5855-01-582-1584
LA-13P GLIS BE Meyers 5860-01-598-6556
LA-12P GLIS L-3 5860-01-598-7398
AN/PEQ-15 ATPIAL (black) 5855-01-534-5931
AN/PEQ-15 ATPIAL (tan) 5855-01-577-7174
AN/PEQ-15A DBAL (black) 5855-01-535-6166
AN/PEQ-15A DBAL (green) 5855-01-579-0062
MFAL 5855-01-537-6000
AN/PAQ-4A 5855-01-312-5160
AN/PAQ-4B 5855-01-361-1362
AN/PAQ-4C 5855-01-398-4315
AN/PEQ-2B TPIAL 5855-01-515-6904
AN/PEQ-2C TPIAL 5855-01-515-6908
AN/PEQ-10 ILWIP 5855-01-529-4726
AN/PEQ-16 IPIM 5855-01-538-5521

Questions? Contact Engels Arias at DSN 786-1230, (586) 282-1230 or email: