An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

Home : Articles
Have a Soldier/Warfighter who takes pride and ownership of their assigned equipment? Then nominate them for PS Magazine's "I Own This" recognition program. Click HERE to learn more.
PS Magazine poster image which links to the posters page at
Click on image above to view and
this and other posters
Would you stake your life, right now, on the condition of your equipment?
NEWS | July 14, 2021

M249 Machine Gun: Dimple Usually Not a Problem

This article initially appeared in PS 788 (Jul 18), p. 42. 
When M885A1 rounds are fired through an M249 machine gun, a small dimple is often created in the feed throat of the barrel.

It’s usually no problem. Testing has shown that even 25,000 rounds fired through a dimpled barrel caused no problems.
Dimple in feed throat usually not a problem
Dimple in feed throat usually not a problem

Barrels with a dimple are considered good to go as long as there are no extraction problems. If there is poor extracting, replace the barrel.

Also replace the barrel if there are feeding problems or the headspace gage won’t seat.
Want to get better search results faster? 
Click the link below to access our "how to" guide
After entering a keyword, you must hit or click the Search bar/box below for the function to work.
Simply hitting Return won't yield results.
Note about links to archive articles

If you come across a link to a pre-2014 PS Magazine issue or article that uses LOGSA in the web address (URL), use this link instead:
For issues/articles from 2014 and after, click on the Archive/Index tab in the top menu of this website.

BE ADVISED: With the migration to Army365, emails in older articles may still reflect an address. To update, change the domain to